RPS-BLAST 2.2.26 [Sep-21-2011]
Database: CDD.v3.10
44,354 sequences; 10,937,602 total letters
Searching..................................................done
Query= psy15854
(191 letters)
>gnl|CDD|212714 cd11780, SH3_Sorbs_3, Third (or C-terminal) Src Homology 3 domain
of Sorbin and SH3 domain containing (Sorbs) proteins and
similar domains. This family, also called the vinexin
family, is composed predominantly of adaptor proteins
containing one sorbin homology (SoHo) and three SH3
domains. Members include the third SH3 domains of Sorbs1
(or ponsin), Sorbs2 (or ArgBP2), Vinexin (or Sorbs3),
and similar domains. They are involved in the regulation
of cytoskeletal organization, cell adhesion, and growth
factor signaling. Members of this family bind multiple
partners including signaling molecules like c-Abl,
c-Arg, Sos, and c-Cbl, as well as cytoskeletal molecules
such as vinculin and afadin. They may have overlapping
functions. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 122 bits (307), Expect = 6e-37
Identities = 41/55 (74%), Positives = 49/55 (89%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y ALY+Y PQN+DELELREG+ V+VMEKCDDGW+VG+S+R+G FGTFPGNYV R
Sbjct: 1 RYRALYSYTPQNEDELELREGDIVYVMEKCDDGWFVGTSERTGLFGTFPGNYVAR 55
Score = 35.4 bits (82), Expect = 0.001
Identities = 18/55 (32%), Positives = 29/55 (52%), Gaps = 8/55 (14%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRR-----GIFPVTYVE 72
RA +++ Q EL L +G++V ++ + D+ WF +GT G FP YV
Sbjct: 3 RALYSYTPQNEDELELREGDIVYVMEKCDDGWF---VGTSERTGLFGTFPGNYVA 54
>gnl|CDD|212716 cd11782, SH3_Sorbs_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing (Sorbs) proteins and similar
domains. This family, also called the vinexin family,
is composed predominantly of adaptor proteins
containing one sorbin homology (SoHo) and three SH3
domains. Members include the second SH3 domains of
Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or
Sorbs3), and similar domains. They are involved in the
regulation of cytoskeletal organization, cell adhesion,
and growth factor signaling. Members of this family
bind multiple partners including signaling molecules
like c-Abl, c-Arg, Sos, and c-Cbl, as well as
cytoskeletal molecules such as vinculin and afadin.
They may have overlapping functions. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 97.8 bits (244), Expect = 2e-27
Identities = 34/52 (65%), Positives = 44/52 (84%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+ARAK+NF A T +ELS KG+++TL RRVD NW+EGRIG R+GIFPV+YV+
Sbjct: 1 EARAKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQGIFPVSYVQ 52
Score = 41.6 bits (98), Expect = 7e-06
Identities = 17/52 (32%), Positives = 26/52 (50%), Gaps = 4/52 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGS-SQRSGCFGTFPGNYVE 151
A YN+ EL R+G+ + + + D+ WY G R G FP +YV+
Sbjct: 4 AKYNFNADTGVELSFRKGDVITLTRRVDENWYEGRIGGRQ---GIFPVSYVQ 52
>gnl|CDD|212850 cd11917, SH3_Sorbs2_3, Third (or C-terminal) Src Homology 3 domain
of Sorbin and SH3 domain containing 2 (Sorbs2), also
called Arg-binding protein 2 (ArgBP2). Sorbs2 or ArgBP2
is an adaptor protein containing one sorbin homology
(SoHo) and three SH3 domains. It regulates
actin-dependent processes including cell adhesion,
morphology, and migration. It is expressed in many
tissues and is abundant in the heart. Like vinexin, it
is found in focal adhesion where it interacts with
vinculin and afadin. It also localizes in epithelial
cell stress fibers and in cardiac muscle cell Z-discs.
Sorbs2 has been implicated to play roles in the
signaling of c-Arg, Akt, and Pyk2. Other interaction
partners of Sorbs2 include c-Abl, flotillin, spectrin,
dynamin 1/2, synaptojanin, PTP-PEST, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 61
Score = 97.4 bits (242), Expect = 3e-27
Identities = 39/60 (65%), Positives = 49/60 (81%)
Query: 93 HSDPVPYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
P+ ALYNY P+N+DELELREG+ + VMEKCDDGW+VG+S+R+ FGTFPGNYV+R
Sbjct: 1 QGGGEPFQALYNYMPRNEDELELREGDVIDVMEKCDDGWFVGTSRRTKFFGTFPGNYVKR 60
Score = 33.0 bits (75), Expect = 0.010
Identities = 17/56 (30%), Positives = 33/56 (58%), Gaps = 8/56 (14%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRR-----GIFPVTYVEQ 73
+A +N++ + EL L +G+++ ++ + D+ WF +GT R G FP YV++
Sbjct: 8 QALYNYMPRNEDELELREGDVIDVMEKCDDGWF---VGTSRRTKFFGTFPGNYVKR 60
>gnl|CDD|212851 cd11918, SH3_Vinexin_3, Third (or C-terminal) Src Homology 3 domain
of Vinexin, also called Sorbin and SH3 domain containing
3 (Sorbs3). Vinexin is also called Sorbs3, SH3P3, and
SH3-containing adapter molecule 1 (SCAM-1). It is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. Vinexin was first identified as a
vinculin binding protein; it is co-localized with
vinculin at cell-ECM and cell-cell adhesion sites. There
are several splice variants of vinexin: alpha, which
contains the SoHo and three SH3 domains and displays
tissue-specific expression; and beta, which contains
only the three SH3 domains and is widely expressed.
Vinexin alpha stimulates the accumulation of F-actin at
focal contact sites. Vinexin also promotes keratinocyte
migration and wound healing. The SH3 domains of vinexin
have been reported to bind a number of ligands including
vinculin, WAVE2, DLG5, Abl, and Cbl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 96.6 bits (240), Expect = 8e-27
Identities = 37/53 (69%), Positives = 46/53 (86%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
PY A+Y Y+PQN+DELELREG+ V VM++CDDGW+VG S+R+ FGTFPGNYV
Sbjct: 3 PYKAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
Score = 33.4 bits (76), Expect = 0.008
Identities = 17/51 (33%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG--RIGTRRGIFPVTYV 71
+A + + Q EL L +G+ V ++++ D+ WF G R + G FP YV
Sbjct: 5 KAVYQYRPQNEDELELREGDRVDVMQQCDDGWFVGVSRRTQKFGTFPGNYV 55
>gnl|CDD|212849 cd11916, SH3_Sorbs1_3, Third (or C-terminal) Src Homology 3 domain
of Sorbin and SH3 domain containing 1 (Sorbs1), also
called ponsin. Sorbs1 is also called ponsin, SH3P12, or
CAP (c-Cbl associated protein). It is an adaptor protein
containing one sorbin homology (SoHo) and three SH3
domains. It binds Cbl and plays a major role in
regulating the insulin signaling pathway by enhancing
insulin-induced phosphorylation of Cbl. Sorbs1, like
vinexin, localizes at cell-ECM and cell-cell adhesion
sites where it binds vinculin, paxillin, and afadin. It
may function in the control of cell motility. Other
interaction partners of Sorbs1 include c-Abl, Sos,
flotillin, Grb4, ataxin-7, filamin C, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 96.2 bits (239), Expect = 1e-26
Identities = 39/55 (70%), Positives = 47/55 (85%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y ALY+Y PQNDDELELR+G+ V VMEKCDDGW+VG+S+R+ FGTFPGNYV+
Sbjct: 2 YSYQALYSYAPQNDDELELRDGDIVDVMEKCDDGWFVGTSRRTKQFGTFPGNYVK 56
Score = 33.8 bits (77), Expect = 0.005
Identities = 18/55 (32%), Positives = 30/55 (54%), Gaps = 8/55 (14%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRR-----GIFPVTYVE 72
+A +++ Q EL L G++V ++ + D+ WF +GT R G FP YV+
Sbjct: 5 QALYSYAPQNDDELELRDGDIVDVMEKCDDGWF---VGTSRRTKQFGTFPGNYVK 56
>gnl|CDD|212717 cd11783, SH3_SH3RF_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 1 (SH3RF1), SH3RF3, and similar
domains. SH3RF1 (or POSH) and SH3RF3 (or POSH2) are
scaffold proteins that function as E3 ubiquitin-protein
ligases. They contain an N-terminal RING finger domain
and four SH3 domains. This model represents the third
SH3 domain, located in the middle of SH3RF1 and SH3RF3,
and similar domains. SH3RF1 plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF3 interacts with p21-activated kinase 2 (PAK2) and
GTP-loaded Rac1. It may play a role in regulating JNK
mediated apoptosis in certain conditions. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 85.9 bits (213), Expect = 9e-23
Identities = 34/52 (65%), Positives = 38/52 (73%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
Y ALY YKPQ DELELR+GE V EKC DGW+ G+S R+G G FPGNYV
Sbjct: 2 YVALYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTGQSGVFPGNYV 53
Score = 35.8 bits (83), Expect = 0.001
Identities = 19/51 (37%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYV 71
A + + Q EL L KGE+ T+ + + WF+G R G + G+FP YV
Sbjct: 4 ALYPYKPQKPDELELRKGEMYTVTEKCQDGWFKGTSLRTG-QSGVFPGNYV 53
>gnl|CDD|212858 cd11925, SH3_SH3RF3_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with GTP-loaded
Rac1. SH3RF3 is highly homologous to SH3RF1; it also
contains an N-terminal RING finger domain and four SH3
domains. This model represents the third SH3 domain,
located in the middle, of SH3RF3. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 79.3 bits (195), Expect = 3e-20
Identities = 34/52 (65%), Positives = 40/52 (76%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
Y ALY YKPQ +DELELR+GE V+EKC DGW+ G+S R+G G FPGNYV
Sbjct: 3 YLALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGVSGVFPGNYV 54
Score = 32.3 bits (73), Expect = 0.020
Identities = 19/51 (37%), Positives = 28/51 (54%), Gaps = 4/51 (7%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYV 71
A + + Q + EL L KGE+ +I + + WF+G R G G+FP YV
Sbjct: 5 ALYAYKPQKNDELELRKGEMYRVIEKCQDGWFKGTSLRTGV-SGVFPGNYV 54
>gnl|CDD|212856 cd11923, SH3_Sorbs2_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing 2 (Sorbs2), also called
Arg-binding protein 2 (ArgBP2). Sorbs2 or ArgBP2 is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. It regulates actin-dependent
processes including cell adhesion, morphology, and
migration. It is expressed in many tissues and is
abundant in the heart. Like vinexin, it is found in
focal adhesion where it interacts with vinculin and
afadin. It also localizes in epithelial cell stress
fibers and in cardiac muscle cell Z-discs. Sorbs2 has
been implicated to play roles in the signaling of
c-Arg, Akt, and Pyk2. Other interaction partners of
Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2,
synaptojanin, PTP-PEST, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 75.7 bits (186), Expect = 9e-19
Identities = 34/55 (61%), Positives = 46/55 (83%), Gaps = 2/55 (3%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI-GT-RRGIFPVTYVE 72
G+A AK+NF A T++ELSL KG+ V L+++VD NW+EG+I GT R+GIFPV+YVE
Sbjct: 1 GEAVAKYNFNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVE 55
Score = 40.3 bits (94), Expect = 2e-05
Identities = 19/51 (37%), Positives = 29/51 (56%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A YN+ + EL LR+G+ V ++++ D WY G + G FP +YVE
Sbjct: 5 AKYNFNADTNVELSLRKGDRVVLLKQVDQNWYEGKIPGTNRQGIFPVSYVE 55
>gnl|CDD|212855 cd11922, SH3_Sorbs1_2, Second Src Homology 3 domain of Sorbin and
SH3 domain containing 1 (Sorbs1), also called ponsin.
Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl
associated protein). It is an adaptor protein
containing one sorbin homology (SoHo) and three SH3
domains. It binds Cbl and plays a major role in
regulating the insulin signaling pathway by enhancing
insulin-induced phosphorylation of Cbl. Sorbs1, like
vinexin, localizes at cell-ECM and cell-cell adhesion
sites where it binds vinculin, paxillin, and afadin. It
may function in the control of cell motility. Other
interaction partners of Sorbs1 include c-Abl, Sos,
flotillin, Grb4, ataxin-7, filamin C, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 74.6 bits (183), Expect = 2e-18
Identities = 32/55 (58%), Positives = 43/55 (78%), Gaps = 2/55 (3%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIG--TRRGIFPVTYVE 72
G+A AKFNF T +E+S KGE +TL+R+VD NW+EGRI +R+GIFP+TYV+
Sbjct: 1 GEAIAKFNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVD 55
Score = 34.6 bits (79), Expect = 0.003
Identities = 15/51 (29%), Positives = 26/51 (50%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A +N+ E+ R+GE + ++ + D+ WY G + G FP YV+
Sbjct: 5 AKFNFNGDTQVEMSFRKGERITLLRQVDENWYEGRIPGTSRQGIFPITYVD 55
>gnl|CDD|212715 cd11781, SH3_Sorbs_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing (Sorbs) proteins and similar
domains. This family, also called the vinexin family,
is composed predominantly of adaptor proteins
containing one sorbin homology (SoHo) and three SH3
domains. Members include the first SH3 domains of
Sorbs1 (or ponsin), Sorbs2 (or ArgBP2), Vinexin (or
Sorbs3), and similar domains. They are involved in the
regulation of cytoskeletal organization, cell adhesion,
and growth factor signaling. Members of this family
bind multiple partners including signaling molecules
like c-Abl, c-Arg, Sos, and c-Cbl, as well as
cytoskeletal molecules such as vinculin and afadin.
They may have overlapping functions. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 72.8 bits (179), Expect = 1e-17
Identities = 26/51 (50%), Positives = 36/51 (70%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
ARA + F AQ+ ELSL KG+++ + R++D NW+EG R GIFP +YVE
Sbjct: 2 ARALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGEHNGRVGIFPASYVE 52
Score = 52.7 bits (127), Expect = 4e-10
Identities = 20/51 (39%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY +K Q+ EL L++G+ +++ + D WY G +G G FP +YVE
Sbjct: 4 ALYPFKAQSAKELSLKKGDIIYIRRQIDKNWYEGE--HNGRVGIFPASYVE 52
>gnl|CDD|212725 cd11791, SH3_UBASH3, Src homology 3 domain of Ubiquitin-associated
and SH3 domain-containing proteins, also called TULA (T
cell Ubiquitin LigAnd) family of proteins. UBASH3 or
TULA proteins are also referred to as Suppressor of T
cell receptor Signaling (STS) proteins. They contain an
N-terminal UBA domain, a central SH3 domain, and a
C-terminal histidine phosphatase domain. They bind c-Cbl
through the SH3 domain and to ubiquitin via UBA. In some
vertebrates, there are two TULA family proteins, called
UBASH3A (also called TULA or STS-2) and UBASH3B (also
called TULA-2 or STS-1), which show partly overlapping
as well as distinct functions. UBASH3B is widely
expressed while UBASH3A is only found in lymphoid cells.
UBASH3A facilitates apoptosis induced in T cells through
its interaction with the apoptosis-inducing factor AIF.
UBASH3B is an active phosphatase while UBASH3A is not.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 71.6 bits (176), Expect = 3e-17
Identities = 24/58 (41%), Positives = 33/58 (56%), Gaps = 4/58 (6%)
Query: 99 YHALYNYKPQNDDELELREGETVFV----MEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
LY Y PQ +DELEL G+ ++V ++ DGW G+S +GC G P NY E+
Sbjct: 2 LRVLYPYTPQEEDELELVPGDYIYVSPEELDSSSDGWVEGTSWLTGCSGLLPENYTEK 59
>gnl|CDD|212859 cd11926, SH3_SH3RF1_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 1, an E3 ubiquitin-protein
ligase. SH3RF1 is also called POSH (Plenty of SH3s) or
SH3MD2 (SH3 multiple domains protein 2). It is a
scaffold protein that acts as an E3 ubiquitin-protein
ligase. It plays a role in calcium homeostasis through
the control of the ubiquitin domain protein Herp. It may
also have a role in regulating death receptor mediated
and JNK mediated apoptosis. SH3RF1 also enhances the
ubiquitination of ROMK1 potassium channel resulting in
its increased endocytosis. It contains an N-terminal
RING finger domain and four SH3 domains. This model
represents the third SH3 domain, located in the middle,
of SH3RF1. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 70.8 bits (173), Expect = 6e-17
Identities = 28/52 (53%), Positives = 36/52 (69%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
Y A+Y Y P+ +DELELR+GE V E+C DGW+ G+S + G FPGNYV
Sbjct: 2 YVAIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYV 53
Score = 32.6 bits (74), Expect = 0.015
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI--GTRRGIFPVTYV 71
A + + + EL L KGE+ + R + WF+G ++ G+FP YV
Sbjct: 4 AIYPYTPRKEDELELRKGEMFLVFERCQDGWFKGTSMHTSKIGVFPGNYV 53
>gnl|CDD|214620 smart00326, SH3, Src homology 3 domains. Src homology 3 (SH3)
domains bind to target proteins through sequences
containing proline and hydrophobic amino acids.
Pro-containing polypeptides may bind to SH3 domains in 2
different binding orientations.
Length = 56
Score = 70.6 bits (174), Expect = 8e-17
Identities = 26/57 (45%), Positives = 35/57 (61%), Gaps = 1/57 (1%)
Query: 95 DPVPYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
+ ALY+Y Q+ DEL ++G+ + V+EK DDGW+ G R G G FP NYVE
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGR-GKEGLFPSNYVE 56
Score = 65.3 bits (160), Expect = 8e-15
Identities = 22/56 (39%), Positives = 37/56 (66%), Gaps = 1/56 (1%)
Query: 18 SEGQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYVE 72
Q RA +++ AQ ELS KG+++T++ + D+ W++GR+G + G+FP YVE
Sbjct: 1 EGPQVRALYDYTAQDPDELSFKKGDIITVLEKSDDGWWKGRLGRGKEGLFPSNYVE 56
>gnl|CDD|212852 cd11919, SH3_Sorbs1_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing 1 (Sorbs1), also called ponsin.
Sorbs1 is also called ponsin, SH3P12, or CAP (c-Cbl
associated protein). It is an adaptor protein
containing one sorbin homology (SoHo) and three SH3
domains. It binds Cbl and plays a major role in
regulating the insulin signaling pathway by enhancing
insulin-induced phosphorylation of Cbl. Sorbs1, like
vinexin, localizes at cell-ECM and cell-cell adhesion
sites where it binds vinculin, paxillin, and afadin. It
may function in the control of cell motility. Other
interaction partners of Sorbs1 include c-Abl, Sos,
flotillin, Grb4, ataxin-7, filamin C, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 67.3 bits (164), Expect = 1e-15
Identities = 27/52 (51%), Positives = 37/52 (71%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
ARAKF+F AQT EL L KG++V + +++D NW+EG R GIFP +Y+E
Sbjct: 2 PARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEGEHHGRVGIFPRSYIE 53
Score = 43.4 bits (102), Expect = 2e-06
Identities = 19/54 (35%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
P A +++K Q EL L++G+ V++ ++ D WY G + G G FP +Y+E
Sbjct: 2 PARAKFDFKAQTLKELPLQKGDIVYIYKQIDQNWYEG--EHHGRVGIFPRSYIE 53
>gnl|CDD|212700 cd11766, SH3_Nck_2, Second Src Homology 3 domain of Nck adaptor
proteins. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4), which show partly
overlapping functions but also bind distinct targets.
Their SH3 domains are involved in recruiting downstream
effector molecules, such as the N-WASP/Arp2/3 complex,
which when activated induces actin polymerization that
results in the production of pedestals, or protrusions
of the plasma membrane. The second SH3 domain of Nck
appears to prefer ligands containing the APxxPxR motif.
SH3 domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 67.3 bits (165), Expect = 1e-15
Identities = 25/55 (45%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
P +NY+ Q +DEL LR+G+ V V+EK DGW+ G G G FP NYV
Sbjct: 1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECN--GQVGWFPSNYVTE 53
Score = 48.0 bits (115), Expect = 2e-08
Identities = 20/52 (38%), Positives = 28/52 (53%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A KFN+ AQ ELSL KG+ V ++ + + W+ G + G FP YV
Sbjct: 1 PAVVKFNYEAQREDELSLRKGDRVLVLEKSSDGWWRGECNGQVGWFPSNYVT 52
>gnl|CDD|212690 cd00174, SH3, Src Homology 3 domain superfamily. Src Homology 3
(SH3) domains are protein interaction domains that bind
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. Thus, they
are referred to as proline-recognition domains (PRDs).
SH3 domains are less selective and show more diverse
specificity compared to other PRDs. They have been shown
to bind peptide sequences that lack the PxxP motif;
examples include the PxxDY motif of Eps8 and the
RKxxYxxY sequence in SKAP55. SH3 domain containing
proteins play versatile and diverse roles in the cell,
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies, among others. Many members of this
superfamily are adaptor proteins that associate with a
number of protein partners, facilitating complex
formation and signal transduction.
Length = 51
Score = 64.8 bits (159), Expect = 1e-14
Identities = 24/49 (48%), Positives = 33/49 (67%), Gaps = 1/49 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
ALY+Y+ Q+DDEL ++G+ + V+EK DDGW+ G G G FP NY
Sbjct: 4 ALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNG-GREGLFPANY 51
Score = 60.9 bits (149), Expect = 3e-13
Identities = 21/51 (41%), Positives = 34/51 (66%), Gaps = 1/51 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI-GTRRGIFPVTY 70
ARA +++ AQ ELS KG+++T++ + D+ W+EG + G R G+FP Y
Sbjct: 1 YARALYDYEAQDDDELSFKKGDIITVLEKDDDGWWEGELNGGREGLFPANY 51
>gnl|CDD|212719 cd11785, SH3_SH3RF_C, C-terminal (Fourth) Src Homology 3 domain of
SH3 domain containing ring finger 1 (SH3RF1), SH3RF3,
and similar domains. SH3RF1 (or POSH) and SH3RF3 (or
POSH2) are scaffold proteins that function as E3
ubiquitin-protein ligases. They contain an N-terminal
RING finger domain and four SH3 domains. This model
represents the fourth SH3 domain, located at the
C-terminus of SH3RF1 and SH3RF3, and similar domains.
SH3RF1 plays a role in calcium homeostasis through the
control of the ubiquitin domain protein Herp. It may
also have a role in regulating death receptor mediated
and JNK mediated apoptosis. SH3RF3 interacts with
p21-activated kinase 2 (PAK2) and GTP-loaded Rac1. It
may play a role in regulating JNK mediated apoptosis in
certain conditions. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 65.2 bits (159), Expect = 1e-14
Identities = 27/53 (50%), Positives = 39/53 (73%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y + Y PQ++ ELEL+EG+ VFV +K +DGW+ G+ QR+G G FPG++VE
Sbjct: 2 YRVIVPYPPQSEAELELKEGDIVFVHKKREDGWFKGTLQRTGKTGLFPGSFVE 54
Score = 31.7 bits (72), Expect = 0.027
Identities = 16/45 (35%), Positives = 30/45 (66%), Gaps = 4/45 (8%)
Query: 31 QTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYVE 72
Q+ EL L +G++V + ++ ++ WF+G R G + G+FP ++VE
Sbjct: 11 QSEAELELKEGDIVFVHKKREDGWFKGTLQRTG-KTGLFPGSFVE 54
>gnl|CDD|212853 cd11920, SH3_Sorbs2_1, First Src Homology 3 domain of Sorbin and
SH3 domain containing 2 (Sorbs2), also called
Arg-binding protein 2 (ArgBP2). Sorbs2 or ArgBP2 is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. It regulates actin-dependent
processes including cell adhesion, morphology, and
migration. It is expressed in many tissues and is
abundant in the heart. Like vinexin, it is found in
focal adhesion where it interacts with vinculin and
afadin. It also localizes in epithelial cell stress
fibers and in cardiac muscle cell Z-discs. Sorbs2 has
been implicated to play roles in the signaling of
c-Arg, Akt, and Pyk2. Other interaction partners of
Sorbs2 include c-Abl, flotillin, spectrin, dynamin 1/2,
synaptojanin, PTP-PEST, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 63.9 bits (155), Expect = 3e-14
Identities = 27/52 (51%), Positives = 38/52 (73%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
ARA ++F AQT ELS KG+ V ++R++D NW+EG R GIFP++YVE+
Sbjct: 3 ARAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEGEHHGRVGIFPISYVEK 54
Score = 50.4 bits (120), Expect = 4e-09
Identities = 22/55 (40%), Positives = 34/55 (61%), Gaps = 2/55 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
P A+Y++K Q EL ++G+TV+++ K D WY G + G G FP +YVE+
Sbjct: 2 PARAVYDFKAQTSKELSFKKGDTVYILRKIDQNWYEG--EHHGRVGIFPISYVEK 54
>gnl|CDD|212723 cd11789, SH3_Nebulin_family_C, C-terminal Src Homology 3 domain of
the Nebulin family of proteins. Nebulin family proteins
contain multiple nebulin repeats, and may contain an
N-terminal LIM domain and/or a C-terminal SH3 domain.
They have molecular weights ranging from 34 to 900 kD,
depending on the number of nebulin repeats, and they all
bind actin. They are involved in the regulation of actin
filament architecture and function as stabilizers and
scaffolds for cytoskeletal structures with which they
associate, such as long actin filaments or focal
adhesions. Nebulin family proteins that contain a
C-terminal SH3 domain include the giant filamentous
protein nebulin, nebulette, Lasp1, and Lasp2. Lasp2,
also called LIM-nebulette, is an alternatively spliced
variant of nebulette. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 63.5 bits (155), Expect = 3e-14
Identities = 24/53 (45%), Positives = 34/53 (64%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y A+Y+Y +DDE+ +EG+ + +E DDGW G+ QR+G G P NYVE
Sbjct: 2 YRAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTGQSGMLPANYVE 54
Score = 34.6 bits (80), Expect = 0.002
Identities = 17/54 (31%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYVEQ 73
RA +++ A E+S +G+++ + +D+ W EG R G + G+ P YVE
Sbjct: 3 RAMYDYAAADDDEVSFQEGDVIINVEIIDDGWMEGTVQRTG-QSGMLPANYVEL 55
>gnl|CDD|212857 cd11924, SH3_Vinexin_2, Second Src Homology 3 domain of Vinexin,
also called Sorbin and SH3 domain containing 3
(Sorbs3). Vinexin is also called Sorbs3, SH3P3, and
SH3-containing adapter molecule 1 (SCAM-1). It is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. Vinexin was first identified as
a vinculin binding protein; it is co-localized with
vinculin at cell-ECM and cell-cell adhesion sites.
There are several splice variants of vinexin: alpha,
which contains the SoHo and three SH3 domains and
displays tissue-specific expression; and beta, which
contains only the three SH3 domains and is widely
expressed. Vinexin alpha stimulates the accumulation of
F-actin at focal contact sites. Vinexin also promotes
keratinocyte migration and wound healing. The SH3
domains of vinexin have been reported to bind a number
of ligands including vinculin, WAVE2, DLG5, Abl, and
Cbl. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 63.1 bits (153), Expect = 5e-14
Identities = 29/55 (52%), Positives = 40/55 (72%), Gaps = 2/55 (3%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI-GT-RRGIFPVTYVE 72
G+A A++ F +ELS KGE + LIR+V+ NW+EGRI GT R+GIFP +YV+
Sbjct: 1 GEAVAQYTFKGDLEVELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQ 55
Score = 41.9 bits (98), Expect = 6e-06
Identities = 18/51 (35%), Positives = 29/51 (56%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A Y +K + EL R+GE + ++ K ++ WY G +G G FP +YV+
Sbjct: 5 AQYTFKGDLEVELSFRKGEHICLIRKVNENWYEGRITGTGRQGIFPASYVQ 55
>gnl|CDD|212760 cd11826, SH3_Abi, Src homology 3 domain of Abl Interactor proteins.
Abl interactor (Abi) proteins are adaptor proteins
serving as binding partners and substrates of Abl
tyrosine kinases. They are involved in regulating actin
cytoskeletal reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. They localize to sites of actin
polymerization in epithelial adherens junction and
immune synapses, as well as to the leading edge of
lamellipodia. Vertebrates contain two Abi proteins, Abi1
and Abi2. Abi1 displays a wide expression pattern while
Abi2 is highly expressed in the eye and brain. Abi
proteins contain a homeobox homology domain, a
proline-rich region, and a SH3 domain. The SH3 domain of
Abi binds to a PxxP motif in Abl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 62.0 bits (151), Expect = 1e-13
Identities = 27/51 (52%), Positives = 34/51 (66%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y DDEL +EG+ ++V +K DDGWY G +G G FPGNYVE
Sbjct: 4 ALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVL--NGVTGLFPGNYVE 52
Score = 43.1 bits (102), Expect = 2e-06
Identities = 16/50 (32%), Positives = 30/50 (60%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A +++ A ELS +G+++ + ++ D+ W+EG + G+FP YVE
Sbjct: 3 VALYDYTADKDDELSFQEGDIIYVTKKNDDGWYEGVLNGVTGLFPGNYVE 52
>gnl|CDD|212737 cd11803, SH3_Endophilin_A, Src homology 3 domain of Endophilin-A.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain three endophilin-A isoforms (A1,
A2, and A3). Endophilin-A proteins are enriched in the
brain and play multiple roles in receptor-mediated
endocytosis. They tubulate membranes and regulate
calcium influx into neurons to trigger the activation
of the endocytic machinery. They are also involved in
the sorting of plasma membrane proteins, actin filament
assembly, and the uncoating of clathrin-coated vesicles
for fusion with endosomes. Endophilins contain an
N-terminal N-BAR domain (BAR domain with an additional
N-terminal amphipathic helix), followed by a variable
region containing proline clusters, and a C-terminal
SH3 domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 61.9 bits (151), Expect = 2e-13
Identities = 20/52 (38%), Positives = 32/52 (61%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
RA ++F + EL +G+++TL ++D NW+EG + + G FPV YVE
Sbjct: 2 CCRALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVNGQSGFFPVNYVE 53
Score = 51.9 bits (125), Expect = 1e-09
Identities = 21/51 (41%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+++P+N+ EL +EG+ + + + D+ WY G G G FP NYVE
Sbjct: 5 ALYDFEPENEGELGFKEGDIITLTNQIDENWYEGMVN--GQSGFFPVNYVE 53
>gnl|CDD|212739 cd11805, SH3_GRB2_like_C, C-terminal Src homology 3 domain of
Growth factor receptor-bound protein 2 (GRB2) and
related proteins. This family includes the adaptor
protein GRB2 and related proteins including Drosophila
melanogaster Downstream of receptor kinase (DRK),
Caenorhabditis elegans Sex muscle abnormal protein 5
(Sem-5), GRB2-related adaptor protein (GRAP), GRAP2,
and similar proteins. Family members contain an
N-terminal SH3 domain, a central SH2 domain, and a
C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which
converts Ras to the active GTP-bound state. GRAP2 plays
an important role in T cell receptor (TCR) signaling by
promoting the formation of the SLP-76:LAT complex,
which couples the TCR to the Ras pathway. GRAP acts as
a negative regulator of T cell receptor (TCR)-induced
lymphocyte proliferation by downregulating the
signaling to the Ras/ERK pathway. The C-terminal SH3
domains (SH3c) of GRB2 and GRAP2 have been shown to
bind to classical PxxP motif ligands, as well as to
non-classical motifs. GRB2 SH3c binds Gab2
(Grb2-associated binder 2) through epitopes containing
RxxK motifs, while the SH3c of GRAP2 binds to the
phosphatase-like protein HD-PTP via a RxxxxK motif. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 60.7 bits (148), Expect = 4e-13
Identities = 17/52 (32%), Positives = 32/52 (61%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+ +A ++F Q EL +G+++T++ D +W++G + R GIFP YV+
Sbjct: 1 RVQALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELRGRVGIFPANYVQ 52
Score = 51.1 bits (123), Expect = 2e-09
Identities = 21/53 (39%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
ALY++ PQ ELE R G+ + V++ D W+ G + G G FP NYV+
Sbjct: 3 QALYDFNPQEPGELEFRRGDIITVLDSSDPDWWKGELR--GRVGIFPANYVQP 53
>gnl|CDD|212854 cd11921, SH3_Vinexin_1, First Src Homology 3 domain of Vinexin,
also called Sorbin and SH3 domain containing 3
(Sorbs3). Vinexin is also called Sorbs3, SH3P3, and
SH3-containing adapter molecule 1 (SCAM-1). It is an
adaptor protein containing one sorbin homology (SoHo)
and three SH3 domains. Vinexin was first identified as
a vinculin binding protein; it is co-localized with
vinculin at cell-ECM and cell-cell adhesion sites.
There are several splice variants of vinexin: alpha,
which contains the SoHo and three SH3 domains and
displays tissue-specific expression; and beta, which
contains only the three SH3 domains and is widely
expressed. Vinexin alpha stimulates the accumulation of
F-actin at focal contact sites. Vinexin also promotes
keratinocyte migration and wound healing. The SH3
domains of vinexin have been reported to bind a number
of ligands including vinculin, WAVE2, DLG5, Abl, and
Cbl. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 60.7 bits (147), Expect = 5e-13
Identities = 27/51 (52%), Positives = 34/51 (66%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
AR KF+F AQ+ EL+L KG++V + + VD NW EG R GIFP YVE
Sbjct: 3 ARLKFDFQAQSPKELTLQKGDIVYIHKEVDKNWLEGEHHGRVGIFPANYVE 53
Score = 39.1 bits (91), Expect = 6e-05
Identities = 17/49 (34%), Positives = 30/49 (61%), Gaps = 2/49 (4%)
Query: 103 YNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
++++ Q+ EL L++G+ V++ ++ D W G + G G FP NYVE
Sbjct: 7 FDFQAQSPKELTLQKGDIVYIHKEVDKNWLEG--EHHGRVGIFPANYVE 53
>gnl|CDD|212758 cd11824, SH3_PSTPIP1, Src homology 3 domain of
Proline-Serine-Threonine Phosphatase-Interacting Protein
1. PSTPIP1, also called CD2 Binding Protein 1 (CD2BP1),
is mainly expressed in hematopoietic cells. It is a
binding partner of the cell surface receptor CD2 and
PTP-PEST, a tyrosine phosphatase which functions in cell
motility and Rac1 regulation. It also plays a role in
the activation of the Wiskott-Aldrich syndrome protein
(WASP), which couples actin rearrangement and T cell
activation. Mutations in the gene encoding PSTPIP1 cause
the autoinflammatory disorder known as PAPA (pyogenic
sterile arthritis, pyoderma gangrenosum, and acne)
syndrome. PSTPIP1 contains an N-terminal F-BAR domain,
PEST motifs, and a C-terminal SH3 domain. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 60.5 bits (147), Expect = 6e-13
Identities = 24/53 (45%), Positives = 34/53 (64%), Gaps = 2/53 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y LY+Y Q DDEL + +G+ V V+EK +DGW+ +R+G G PG Y+E
Sbjct: 2 YSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWT--VERNGQKGLVPGTYLE 52
Score = 38.5 bits (90), Expect = 1e-04
Identities = 15/51 (29%), Positives = 30/51 (58%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+++ AQ ELS+ KG++V +I + ++ W+ ++G+ P TY+E
Sbjct: 2 YSVLYDYTAQEDDELSISKGDVVAVIEKGEDGWWTVERNGQKGLVPGTYLE 52
>gnl|CDD|212870 cd11937, SH3_UBASH3A, Src homology 3 domain of Ubiquitin-associated
and SH3 domain-containing protein A. UBASH3A is also
called Cbl-Interacting Protein 4 (CLIP4), T cell
Ubiquitin LigAnd (TULA), or T cell receptor Signaling
(STS)-2. It is only found in lymphoid cells and exhibits
weak phosphatase activity. UBASH3A facilitates T
cell-induced apoptosis through interaction with the
apoptosis-inducing factor AIF. It is involved in
regulating the level of phosphorylation of the
zeta-associated protein (ZAP)-70 tyrosine kinase. TULA
proteins contain an N-terminal UBA domain, a central SH3
domain, and a C-terminal histidine phosphatase domain.
They bind c-Cbl through the SH3 domain and to ubiquitin
via UBA. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 60
Score = 60.4 bits (146), Expect = 7e-13
Identities = 27/56 (48%), Positives = 34/56 (60%), Gaps = 4/56 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFV----MEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
AL+ YKPQN DEL L G+ +FV + +GW +G S R+GC G P NY ER
Sbjct: 5 ALFQYKPQNIDELMLSPGDYIFVDPTQQSEASEGWVIGISHRTGCRGFLPENYTER 60
>gnl|CDD|212776 cd11842, SH3_Ysc84p_like, Src homology 3 domain of Ysc84p and
similar fungal proteins. This family is composed of
the Saccharomyces cerevisiae proteins, Ysc84p (also
called LAS17-binding protein 4, Lsb4p) and Lsb3p, and
similar fungal proteins. They contain an N-terminal
SYLF domain (also called DUF500) and a C-terminal SH3
domain. Ysc84p localizes to actin patches and plays an
important in actin polymerization during endocytosis.
The N-terminal domain of both Ysc84p and Lsb3p can bind
and bundle actin filaments. A study of the yeast SH3
domain interactome predicts that the SH3 domains of
Lsb3p and Lsb4p may function as molecular hubs for the
assembly of endocytic complexes. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 59.7 bits (145), Expect = 9e-13
Identities = 22/54 (40%), Positives = 37/54 (68%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVD--NNWFEGRIGTRRGIFPVTYVE 72
+A A ++F + +L+ KG+++T++++ D N+W+ GRIG R GIFP YVE
Sbjct: 1 KAVALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRIGGREGIFPANYVE 54
Score = 35.9 bits (83), Expect = 8e-04
Identities = 17/53 (32%), Positives = 30/53 (56%), Gaps = 4/53 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD--DGWYVGSSQRSGCFGTFPGNYVE 151
ALY++ + +L ++G+ + +++K D + W+ G G G FP NYVE
Sbjct: 4 ALYDFAGEQPGDLAFQKGDIITILKKSDSQNDWWTGRI--GGREGIFPANYVE 54
>gnl|CDD|212753 cd11819, SH3_Cortactin_like, Src homology 3 domain of Cortactin and
related proteins. This subfamily includes cortactin,
Abp1 (actin-binding protein 1), hematopoietic lineage
cell-specific protein 1 (HS1), and similar proteins.
These proteins are involved in regulating actin dynamics
through direct or indirect interaction with the Arp2/3
complex, which is required to initiate actin
polymerization. They all contain at least one C-terminal
SH3 domain. Cortactin and HS1 bind Arp2/3 and actin
through an N-terminal region that contains an acidic
domain and several copies of a repeat domain found in
cortactin and HS1. Abp1 binds actin via an N-terminal
actin-depolymerizing factor (ADF) homology domain. Yeast
Abp1 binds Arp2/3 directly through two acidic domains.
Mammalian Abp1 does not directly interact with Arp2/3;
instead, it regulates actin dynamics indirectly by
interacting with dynamin and WASP family proteins. The
C-terminal region of these proteins acts as an adaptor
or scaffold that can connect membrane trafficking and
signaling proteins that bind the SH3 domain within the
actin network. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 60.0 bits (146), Expect = 9e-13
Identities = 21/51 (41%), Positives = 33/51 (64%), Gaps = 1/51 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ D+E+ EG+ + +E+ D+GW++G + G G FP NYVE
Sbjct: 4 ALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVN-AKGQKGLFPANYVE 53
Score = 41.9 bits (99), Expect = 5e-06
Identities = 18/53 (33%), Positives = 34/53 (64%), Gaps = 1/53 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI-GTRRGIFPVTYVE 72
+A+A +++ A E+S V+G+++T I ++D W+ G ++G+FP YVE
Sbjct: 1 RAKALYDYQAAEDNEISFVEGDIITQIEQIDEGWWLGVNAKGQKGLFPANYVE 53
>gnl|CDD|212904 cd11971, SH3_Abi1, Src homology 3 domain of Abl Interactor 1.
Abi1, also called e3B1, is a central regulator of actin
cytoskeletal reorganization through interactions with
many protein complexes. It is part of WAVE, a
nucleation-promoting factor complex, that links Rac 1
activation to actin polymerization causing lamellipodia
protrusion at the plasma membrane. Abi1 interact with
formins to promote protrusions at the leading edge of
motile cells. It also is a target of alpha4 integrin,
regulating membrane protrusions at sites of integrin
engagement. Abi proteins are adaptor proteins serving as
binding partners and substrates of Abl tyrosine kinases.
They are involved in regulating actin cytoskeletal
reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. Abi proteins contain a homeobox homology
domain, a proline-rich region, and a SH3 domain. The SH3
domain of Abi binds to a PxxP motif in Abl. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 58.5 bits (141), Expect = 4e-12
Identities = 26/51 (50%), Positives = 33/51 (64%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A+Y+Y DDEL EG ++V++K DDGWY G +G G FPGNYVE
Sbjct: 4 AIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVC--NGVTGLFPGNYVE 52
Score = 39.6 bits (92), Expect = 4e-05
Identities = 16/49 (32%), Positives = 29/49 (59%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A +++ ELS ++G ++ +I++ D+ W+EG G+FP YVE
Sbjct: 4 AIYDYSKDKDDELSFMEGAIIYVIKKNDDGWYEGVCNGVTGLFPGNYVE 52
>gnl|CDD|212868 cd11935, SH3_Nebulette_C, C-terminal Src Homology 3 domain of
Nebulette and LIM-nebulette (or Lasp2). Nebulette is a
cardiac-specific protein that localizes to the Z-disc.
It interacts with tropomyosin and is important in
stabilizing actin thin filaments in cardiac muscles.
Polymorphisms in the nebulette gene are associated with
dilated cardiomyopathy, with some mutations resulting in
severe heart failure. Nebulette is a 107kD protein that
contains an N-terminal acidic region, multiple nebulin
repeats, and a C-terminal SH3 domain. LIM-nebulette,
also called Lasp2 (LIM and SH3 domain protein 2), is an
alternatively spliced variant of nebulette. Although it
shares a gene with nebulette, Lasp2 is not transcribed
from a muscle-specific promoter, giving rise to its
multiple tissue expression pattern with highest amounts
in the brain. It can crosslink actin filaments and it
affects cell spreading. Lasp2 is a 34kD protein
containing an N-terminal LIM domain, three nebulin
repeats, and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 58.1 bits (140), Expect = 5e-12
Identities = 21/53 (39%), Positives = 35/53 (66%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y A+Y+Y Q++DE+ R+G+ + ++ D+GW G+ QR+G G P NY+E
Sbjct: 3 YRAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIE 55
Score = 33.8 bits (77), Expect = 0.004
Identities = 15/52 (28%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI--GTRRGIFPVTYVE 72
RA +++ AQ E+S G+ + ++ +D W G + R G+ P Y+E
Sbjct: 4 RAMYDYSAQDEDEVSFRDGDYIVNVQPIDEGWMYGTVQRTGRTGMLPANYIE 55
>gnl|CDD|212706 cd11772, SH3_OSTF1, Src Homology 3 domain of metazoan osteoclast
stimulating factor 1. OSTF1, also named OSF or SH3P2,
is a signaling protein containing SH3 and ankyrin-repeat
domains. It acts through a Src-related pathway to
enhance the formation of osteoclasts and bone
resorption. It also acts as a negative regulator of cell
motility. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 57.7 bits (140), Expect = 6e-12
Identities = 20/53 (37%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
+ ALY+Y+ Q+ DEL EG+ +++ +K D W+ + G G P NYVE
Sbjct: 2 FRALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCG--GKTGLIPSNYVE 52
Score = 46.9 bits (112), Expect = 6e-08
Identities = 18/50 (36%), Positives = 30/50 (60%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
RA +++ AQ ELS +G+L+ + + D NW++ G + G+ P YVE
Sbjct: 3 RALYDYEAQHPDELSFEEGDLLYISDKSDPNWWKATCGGKTGLIPSNYVE 52
>gnl|CDD|212720 cd11786, SH3_SH3RF_1, First Src Homology 3 domain of SH3 domain
containing ring finger proteins. This model represents
the first SH3 domain of SH3RF1 (or POSH), SH3RF2 (or
POSHER), SH3RF3 (POSH2), and similar domains. Members
of this family are scaffold proteins that function as
E3 ubiquitin-protein ligases. They all contain an
N-terminal RING finger domain and multiple SH3 domains;
SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2
has three. SH3RF1 plays a role in calcium homeostasis
through the control of the ubiquitin domain protein
Herp. It may also have a role in regulating death
receptor mediated and JNK mediated apoptosis. SH3RF3
interacts with p21-activated kinase 2 (PAK2) and
GTP-loaded Rac1. It may play a role in regulating JNK
mediated apoptosis in certain conditions. SH3RF2 acts
as an anti-apoptotic regulator of the JNK pathway by
binding to and promoting the degradation of SH3RF1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 57.0 bits (138), Expect = 1e-11
Identities = 18/51 (35%), Positives = 33/51 (64%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A+A +N+ + +LS KG+++ L +R+D NW+ G ++G FP +YV+
Sbjct: 2 AKALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECNGKQGFFPASYVQ 52
Score = 43.1 bits (102), Expect = 2e-06
Identities = 17/51 (33%), Positives = 30/51 (58%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALYNY+ + +L ++G+ + + ++ D+ WY G G G FP +YV+
Sbjct: 4 ALYNYEGKEPGDLSFKKGDIILLRKRIDENWYHGECN--GKQGFFPASYVQ 52
>gnl|CDD|212807 cd11874, SH3_CD2AP-like_2, Second Src Homology 3 domain (SH3B) of
CD2-associated protein and similar proteins. This
subfamily is composed of the second SH3 domain (SH3B) of
CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and
similar domains. CD2AP and CIN85 are adaptor proteins
that bind to protein partners and assemble complexes
that have been implicated in T cell activation, kidney
function, and apoptosis of neuronal cells. They also
associate with endocytic proteins, actin cytoskeleton
components, and other adaptor proteins involved in
receptor tyrosine kinase (RTK) signaling. CD2AP and the
main isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3B of both proteins have been shown to bind to Cbl. In
the case of CD2AP, its SH3B binds to Cbl at a site
distinct from the c-Cbl/SH3A binding site. The CIN85
SH3B also binds ubiquitin. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 56.6 bits (137), Expect = 1e-11
Identities = 22/51 (43%), Positives = 36/51 (70%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
L++Y PQN+DELEL+ G+T+ V+ + ++GW+ G +G G FP N+V+
Sbjct: 4 VLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGK--LNGKVGVFPSNFVK 52
Score = 43.1 bits (102), Expect = 2e-06
Identities = 14/52 (26%), Positives = 30/52 (57%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+ + F++ Q EL L G+ + ++ V+ W+EG++ + G+FP +V+
Sbjct: 1 RCKVLFSYTPQNEDELELKVGDTIEVLGEVEEGWWEGKLNGKVGVFPSNFVK 52
>gnl|CDD|212721 cd11787, SH3_SH3RF_2, Second Src Homology 3 domain of SH3 domain
containing ring finger proteins. This model represents
the second SH3 domain of SH3RF1 (or POSH), SH3RF2 (or
POSHER), SH3RF3 (POSH2), and similar domains. Members
of this family are scaffold proteins that function as
E3 ubiquitin-protein ligases. They all contain an
N-terminal RING finger domain and multiple SH3 domains;
SH3RF1 and SH3RF3 have four SH3 domains while SH3RF2
has three. SH3RF1 plays a role in calcium homeostasis
through the control of the ubiquitin domain protein
Herp. It may also have a role in regulating death
receptor mediated and JNK mediated apoptosis. SH3RF3
interacts with p21-activated kinase 2 (PAK2) and
GTP-loaded Rac1. It may play a role in regulating JNK
mediated apoptosis in certain conditions. SH3RF2 acts
as an anti-apoptotic regulator of the JNK pathway by
binding to and promoting the degradation of SH3RF1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 56.2 bits (136), Expect = 2e-11
Identities = 22/53 (41%), Positives = 37/53 (69%), Gaps = 3/53 (5%)
Query: 21 QARAKFNF-VAQTHLE--LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTY 70
Q +A ++F + + L+ KG+++T+IRRVD NW EGR+G + GIFP+++
Sbjct: 1 QCKALYDFEMKDEDEKDCLTFKKGDVITVIRRVDENWAEGRLGDKIGIFPISF 53
Score = 33.5 bits (77), Expect = 0.006
Identities = 14/52 (26%), Positives = 30/52 (57%), Gaps = 5/52 (9%)
Query: 101 ALYNYKPQNDDE---LELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
ALY+++ +++DE L ++G+ + V+ + D+ W G + G FP ++
Sbjct: 4 ALYDFEMKDEDEKDCLTFKKGDVITVIRRVDENWAEG--RLGDKIGIFPISF 53
>gnl|CDD|212905 cd11972, SH3_Abi2, Src homology 3 domain of Abl Interactor 2. Abi2
is highly expressed in the brain and eye. It regulates
actin cytoskeletal reorganization at adherens junctions
and dendritic spines, which is important in cell
morphogenesis, migration, and cognitive function. Mice
deficient with Abi2 show defects in orientation and
migration of lens fibers, neuronal migration, dendritic
spine morphology, as well as deficits in learning and
memory. Abi proteins are adaptor proteins serving as
binding partners and substrates of Abl tyrosine kinases.
They are involved in regulating actin cytoskeletal
reorganization and play important roles in
membrane-ruffling, endocytosis, cell motility, and cell
migration. Abi proteins contain a homeobox homology
domain, a proline-rich region, and a SH3 domain. The SH3
domain of Abi binds to a PxxP motif in Abl. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 61
Score = 56.6 bits (136), Expect = 2e-11
Identities = 25/54 (46%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVERAS 154
A+Y+Y +DEL +EG ++V++K DDGWY G +G G FPGNYVE
Sbjct: 7 AIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGV--MNGVTGLFPGNYVESIM 58
Score = 38.5 bits (89), Expect = 1e-04
Identities = 16/49 (32%), Positives = 29/49 (59%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A +++ ELS +G ++ +I++ D+ W+EG + G+FP YVE
Sbjct: 7 AIYDYTKDKEDELSFQEGAIIYVIKKNDDGWYEGVMNGVTGLFPGNYVE 55
>gnl|CDD|212718 cd11784, SH3_SH3RF2_3, Third Src Homology 3 domain of SH3 domain
containing ring finger 2. SH3RF2 is also called POSHER
(POSH-eliminating RING protein) or HEPP1 (heart protein
phosphatase 1-binding protein). It acts as an
anti-apoptotic regulator of the JNK pathway by binding
to and promoting the degradation of SH3RF1 (or POSH), a
scaffold protein that is required for pro-apoptotic JNK
activation. It may also play a role in cardiac functions
together with protein phosphatase 1. SH3RF2 contains an
N-terminal RING finger domain and three SH3 domains.
This model represents the third SH3 domain, located in
the middle, of SH3RF2. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 56.3 bits (136), Expect = 2e-11
Identities = 23/52 (44%), Positives = 31/52 (59%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
AL++Y +ELEL++GE V V+ K +GW G S +G G FP NYV
Sbjct: 2 CVALHSYSAHRPEELELQKGEGVRVLGKFQEGWLRGLSLVTGRVGIFPSNYV 53
Score = 28.6 bits (64), Expect = 0.30
Identities = 17/40 (42%), Positives = 20/40 (50%), Gaps = 4/40 (10%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYV 71
EL L KGE V ++ + W G G R GIFP YV
Sbjct: 15 ELELQKGEGVRVLGKFQEGWLRGLSLVTG-RVGIFPSNYV 53
>gnl|CDD|212743 cd11809, SH3_srGAP, Src homology 3 domain of Slit-Robo GTPase
Activating Proteins. Slit-Robo GTPase Activating
Proteins (srGAPs) are Rho GAPs that interact with
Robo1, the transmembrane receptor of Slit proteins.
Slit proteins are secreted proteins that control axon
guidance and the migration of neurons and leukocytes.
Vertebrates contain three isoforms of srGAPs
(srGAP1-3), all of which are expressed during embryonic
and early development in the nervous system but with
different localization and timing. A fourth member has
also been reported (srGAP4, also called ARHGAP4).
srGAPs contain an N-terminal F-BAR domain, a Rho GAP
domain, and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 55.9 bits (135), Expect = 3e-11
Identities = 17/51 (33%), Positives = 34/51 (66%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+A A+F++ ++ ELS KG+ +TL R+V ++W+ G++ + G+ P Y+
Sbjct: 1 EATAQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRGQLNGQDGLVPHKYI 51
Score = 30.8 bits (70), Expect = 0.055
Identities = 13/50 (26%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A ++Y +++ EL ++G+++ + + D W+ G Q +G G P Y+
Sbjct: 4 AQFDYTGRSERELSFKKGDSLTLYRQVSDDWWRG--QLNGQDGLVPHKYI 51
>gnl|CDD|212802 cd11869, SH3_p40phox, Src Homology 3 domain of the p40phox
subunit of NADPH oxidase. p40phox, also called
Neutrophil cytosol factor 4 (NCF-4), is a cytosolic
subunit of the phagocytic NADPH oxidase complex (also
called Nox2 or gp91phox) which plays a crucial role in
the cellular response to bacterial infection. NADPH
oxidase catalyzes the transfer of electrons from NADPH
to oxygen during phagocytosis forming superoxide and
reactive oxygen species. p40phox positively regulates
NADPH oxidase in both phosphatidylinositol-3-phosphate
(PI3P)-dependent and PI3P-independent manner. It
contains an N-terminal PX domain, a central SH3 domain,
and a C-terminal PB1 domain that interacts with
p67phox. The SH3 domain of p40phox binds to canonical
polyproline and noncanonical motifs at the C-terminus
of p47phox. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 56.0 bits (135), Expect = 3e-11
Identities = 19/52 (36%), Positives = 34/52 (65%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A A F+F + LEL+ G+++ L+ RV+ +W EG + GIFP+++V+
Sbjct: 1 RAEALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVRGATGIFPLSFVK 52
Score = 27.1 bits (60), Expect = 1.2
Identities = 13/51 (25%), Positives = 29/51 (56%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
AL+++ + EL + G+ +F++ + + W G+ + G G FP ++V+
Sbjct: 4 ALFDFTGNSKLELNFKAGDVIFLLSRVNKDWLEGTVR--GATGIFPLSFVK 52
>gnl|CDD|212757 cd11823, SH3_Nostrin, Src homology 3 domain of Nitric Oxide
Synthase TRaffic INducer. Nostrin is expressed in
endothelial and epithelial cells and is involved in the
regulation, trafficking and targeting of endothelial NOS
(eNOS). It facilitates the endocytosis of eNOS by
coordinating the functions of dynamin and the
Wiskott-Aldrich syndrome protein (WASP). Increased
expression of Nostrin may be correlated to preeclampsia.
Nostrin contains an N-terminal F-BAR domain and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 55.8 bits (135), Expect = 3e-11
Identities = 24/51 (47%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y +DEL L+ G+ + V EK DDGW++G +G G FP YVE
Sbjct: 4 ALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGEL--NGKKGIFPATYVE 52
Score = 44.3 bits (105), Expect = 6e-07
Identities = 18/52 (34%), Positives = 33/52 (63%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+ +A +++ A ELSL G+++ + + D+ W+ G + ++GIFP TYVE
Sbjct: 1 RCKALYSYTANREDELSLQPGDIIEVHEKQDDGWWLGELNGKKGIFPATYVE 52
>gnl|CDD|212730 cd11796, SH3_DNMBP_N3, Third N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the
actin cytoskeleton. It plays an important role in
regulating cell junction configuration. The four
N-terminal SH3 domains of DNMBP binds the GTPase
dynamin, which plays an important role in the fission
of endocytic vesicles. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 51
Score = 55.1 bits (133), Expect = 5e-11
Identities = 22/51 (43%), Positives = 30/51 (58%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
QAR + AQ EL L +G++VT+ +D WF G + RRGIFP +V
Sbjct: 1 QARVLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELNGRRGIFPEGFV 51
Score = 42.3 bits (100), Expect = 3e-06
Identities = 19/50 (38%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
L + Q D+EL+LREG+ V + D GW+ G G G FP +V
Sbjct: 4 VLQDLSAQLDEELDLREGDVVTITGILDKGWFRGELN--GRRGIFPEGFV 51
>gnl|CDD|212727 cd11793, SH3_ephexin1_like, Src homology 3 domain of ephexin-1-like
SH3 domain containing Rho guanine nucleotide exchange
factors. Members of this family contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin Homology (PH),
and C-terminal SH3 domains. They include the Rho guanine
nucleotide exchange factors ARHGEF5, ARHGEF16, ARHGEF19,
ARHGEF26, ARHGEF27 (also called ephexin-1), and similar
proteins, and are also called ephexins because they
interact directly with ephrin A receptors. GEFs interact
with Rho GTPases via their DH domains to catalyze
nucleotide exchange by stabilizing the nucleotide-free
GTPase intermediate. They play important roles in
neuronal development. The SH3 domains of ARHGEFs play an
autoinhibitory role through intramolecular interactions
with a proline-rich region N-terminal to the DH domain.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 55.0 bits (133), Expect = 6e-11
Identities = 23/51 (45%), Positives = 28/51 (54%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
++ Y Q DEL L EG+ V V+ K DGWY G R G G FP +Y E
Sbjct: 4 CVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYTE 54
Score = 39.2 bits (92), Expect = 4e-05
Identities = 19/54 (35%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG-RIGT-RRGIFPVTYVE 72
Q + + AQ EL+L +G++V ++R++ + W+EG R+ RG FP +Y E
Sbjct: 1 QVQCVHAYTAQQPDELTLEEGDVVNVLRKMPDGWYEGERLRDGERGWFPSSYTE 54
>gnl|CDD|212834 cd11901, SH3_Nck1_2, Second Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The second SH3
domain of Nck appears to prefer ligands containing the
APxxPxR motif. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a PxxP
motif. They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 54.3 bits (130), Expect = 1e-10
Identities = 26/54 (48%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
+P + +NY + +DEL L +G V VMEKC DGW+ GS +G G FP NYV
Sbjct: 2 LPAYVKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSY--NGQVGWFPSNYV 53
Score = 42.7 bits (100), Expect = 3e-06
Identities = 20/52 (38%), Positives = 29/52 (55%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
A KFN+ A+ ELSLVKG V ++ + + W+ G + G FP YV +
Sbjct: 4 AYVKFNYTAEREDELSLVKGTKVIVMEKCSDGWWRGSYNGQVGWFPSNYVTE 55
>gnl|CDD|212866 cd11933, SH3_Nebulin_C, C-terminal Src Homology 3 domain of
Nebulin. Nebulin is a giant filamentous protein
(600-900 kD) that is expressed abundantly in skeletal
muscle. It binds to actin thin filaments and regulates
its assembly and function. Nebulin was thought to be
part of a molecular ruler complex that is critical in
determining the lengths of actin thin filaments in
skeletal muscle since its length, which varies due to
alternative splicing, correlates with the length of thin
filaments in various muscle types. Recent studies
indicate that nebulin regulates thin filament length by
stabilizing the filaments and preventing
depolymerization. Mutations in nebulin can cause
nemaline myopathy, characterized by muscle weakness
which can be severe and can lead to neonatal lethality.
Nebulin contains an N-terminal LIM domain, many nebulin
repeats/super repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 54.2 bits (130), Expect = 2e-10
Identities = 21/53 (39%), Positives = 36/53 (67%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
+ A+Y+Y+ +DDE+ ++G+T+ ++ D+GW G+ QR+G G P NYVE
Sbjct: 4 FRAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTGKTGMLPANYVE 56
Score = 30.4 bits (68), Expect = 0.080
Identities = 16/53 (30%), Positives = 27/53 (50%), Gaps = 4/53 (7%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYVE 72
RA +++ A E+S G+ + ++ +D W G R G + G+ P YVE
Sbjct: 5 RAMYDYRAADDDEVSFKDGDTIVNVQTIDEGWMYGTVQRTG-KTGMLPANYVE 56
>gnl|CDD|212808 cd11875, SH3_CD2AP-like_3, Third Src Homology 3 domain (SH3C) of
CD2-associated protein and similar proteins. This
subfamily is composed of the third SH3 domain (SH3C) of
CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and
similar domains. CD2AP and CIN85 are adaptor proteins
that bind to protein partners and assemble complexes
that have been implicated in T cell activation, kidney
function, and apoptosis of neuronal cells. They also
associate with endocytic proteins, actin cytoskeleton
components, and other adaptor proteins involved in
receptor tyrosine kinase (RTK) signaling. CD2AP and the
main isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3C of both proteins have been shown to bind to
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 53.9 bits (130), Expect = 2e-10
Identities = 24/55 (43%), Positives = 35/55 (63%), Gaps = 4/55 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEK-CDD-GWYVGSSQRSGCFGTFPGNYVE 151
L++Y+ +N+DEL LREG+ V ++ K C+D GW+ G G G FP N+VE
Sbjct: 2 ARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELN--GKRGVFPDNFVE 54
Score = 46.6 bits (111), Expect = 1e-07
Identities = 19/55 (34%), Positives = 36/55 (65%), Gaps = 2/55 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRV--DNNWFEGRIGTRRGIFPVTYVEQ 73
+AR F++ A+ EL+L +G++VT++ + D W++G + +RG+FP +VE
Sbjct: 1 KARVLFDYEAENEDELTLREGDIVTILSKDCEDKGWWKGELNGKRGVFPDNFVEP 55
>gnl|CDD|212869 cd11936, SH3_UBASH3B, Src homology 3 domain of Ubiquitin-associated
and SH3 domain-containing protein B. UBASH3B, also
called Suppressor of T cell receptor Signaling (STS)-1
or T cell Ubiquitin LigAnd (TULA)-2 is an active
phosphatase that is expressed ubiquitously. The
phosphatase activity of UBASH3B is essential for its
roles in the suppression of TCR signaling and the
regulation of EGFR. It also interacts with Syk and
functions as a negative regulator of platelet
glycoprotein VI signaling. TULA proteins contain an
N-terminal UBA domain, a central SH3 domain, and a
C-terminal histidine phosphatase domain. They bind c-Cbl
through the SH3 domain and to ubiquitin via UBA. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 53.9 bits (129), Expect = 2e-10
Identities = 26/56 (46%), Positives = 36/56 (64%), Gaps = 4/56 (7%)
Query: 102 LYNYKPQNDDELELREGETVFV--MEK--CDDGWYVGSSQRSGCFGTFPGNYVERA 153
+Y Y PQNDDELEL G+ +F+ ME+ +GW G+S +GC G P NY+ +A
Sbjct: 7 IYPYTPQNDDELELVPGDYIFMSPMEQTSTSEGWIYGTSLTTGCSGLLPENYITKA 62
>gnl|CDD|212867 cd11934, SH3_Lasp1_C, C-terminal Src Homology 3 domain of LIM and
SH3 domain protein 1. Lasp1 is a cytoplasmic protein
that binds focal adhesion proteins and is involved in
cell signaling, migration, and proliferation. It is
overexpressed in several cancer cells including breast,
ovarian, bladder, and liver. In cancer cells, it can be
found in the nucleus; its degree of nuclear localization
correlates with tumor size and poor prognosis. Lasp1 is
a 36kD protein containing an N-terminal LIM domain, two
nebulin repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 53.5 bits (128), Expect = 3e-10
Identities = 21/53 (39%), Positives = 36/53 (67%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y A+Y+Y ++DE+ ++G+T+ +++ DDGW G+ +R+G G P NYVE
Sbjct: 5 YRAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVE 57
Score = 32.7 bits (74), Expect = 0.014
Identities = 14/52 (26%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI--GTRRGIFPVTYVE 72
RA +++ A E+S G+ + ++++D+ W G + G+ P YVE
Sbjct: 6 RAVYDYNAADEDEVSFQDGDTIVNVQQIDDGWMYGTVERTGDTGMLPANYVE 57
>gnl|CDD|212987 cd12054, SH3_CD2AP_2, Second Src Homology 3 domain (SH3B) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the second SH3 domain
(SH3B) of CD2AP. SH3B binds to c-Cbl in a site (TPSSRPLR
is the core binding motif) distinct from the c-Cbl/SH3A
binding site. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 52.3 bits (125), Expect = 6e-10
Identities = 21/50 (42%), Positives = 35/50 (70%), Gaps = 2/50 (4%)
Query: 102 LYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
L+ Y PQN+DELEL+ G+ + + E+ ++GW+ G+ +G G FP N+V+
Sbjct: 6 LFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTL--NGKSGLFPSNFVK 53
Score = 38.4 bits (89), Expect = 9e-05
Identities = 15/53 (28%), Positives = 29/53 (54%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
Q + F +V Q EL L G+++ + V+ W+ G + + G+FP +V++
Sbjct: 2 QCKVLFEYVPQNEDELELKVGDIIDINEEVEEGWWSGTLNGKSGLFPSNFVKE 54
>gnl|CDD|212895 cd11962, SH3_Abp1_fungi_C1, First C-terminal Src homology 3 domain
of Fungal Actin-binding protein 1. Abp1 is an adaptor
protein that functions in receptor-mediated endocytosis
and vesicle trafficking. It contains an N-terminal
actin-binding module, the actin-depolymerizing factor
(ADF) homology domain, a central proline-rich region,
and a C-terminal SH3 domain (many yeast Abp1 proteins
contain two C-terminal SH3 domains). Yeast Abp1 also
contains two acidic domains that bind directly to the
Arp2/3 complex, which is required to initiate actin
polymerization. The SH3 domain of yeast Abp1 binds and
localizes the kinases, Ark1p and Prk1p, which facilitate
actin patch disassembly following vesicle
internalization. It also mediates the localization to
the actin patch of the synaptojanin-like protein, Sjl2p,
which plays a key role in endocytosis. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 52.5 bits (126), Expect = 7e-10
Identities = 23/50 (46%), Positives = 34/50 (68%), Gaps = 1/50 (2%)
Query: 102 LYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
LY+Y+ D+E+EL EGE V +E D+ W++G++ + G G FP NYVE
Sbjct: 5 LYDYEKDEDNEIELVEGEIVTNIEMVDEDWWMGTNSK-GESGLFPSNYVE 53
Score = 37.1 bits (86), Expect = 3e-04
Identities = 19/42 (45%), Positives = 26/42 (61%), Gaps = 7/42 (16%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGT----RRGIFPVTYVE 72
E+ LV+GE+VT I VD +W+ +GT G+FP YVE
Sbjct: 15 EIELVEGEIVTNIEMVDEDWW---MGTNSKGESGLFPSNYVE 53
>gnl|CDD|212735 cd11801, SH3_JIP1_like, Src homology 3 domain of JNK-interacting
proteins 1 and 2, and similar domains. JNK-interacting
proteins (JIPs) function as scaffolding proteins for
c-Jun N-terminal kinase (JNK) signaling pathways. They
bind to components of Mitogen-activated protein kinase
(MAPK) pathways such as JNK, MKK, and several MAP3Ks
such as MLK and DLK. There are four JIPs (JIP1-4); all
contain a JNK binding domain. JIP1 and JIP2 also contain
SH3 and Phosphotyrosine-binding (PTB) domains. Both are
highly expressed in the brain and pancreatic beta-cells.
JIP1 functions as an adaptor linking motor to cargo
during axonal transport and also is involved in
regulating insulin secretion. JIP2 form complexes with
fibroblast growth factor homologous factors (FHFs),
which facilitates activation of the p38delta MAPK. The
SH3 domain of JIP1 homodimerizes at the interface
usually involved in proline-rich ligand recognition,
despite the lack of this motif in the domain itself. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 52.3 bits (126), Expect = 7e-10
Identities = 21/50 (42%), Positives = 34/50 (68%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
AL+ + P+++DE+EL G+ V+V ++ DD W G++ R+G G FP YV
Sbjct: 4 ALHKFIPRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTGQRGIFPAAYV 53
Score = 36.5 bits (85), Expect = 5e-04
Identities = 20/53 (37%), Positives = 28/53 (52%), Gaps = 4/53 (7%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYV 71
RA F+ + E+ L G+ V + + D+ W EG R G +RGIFP YV
Sbjct: 2 HRALHKFIPRHEDEIELDIGDPVYVEQEADDLWCEGTNLRTG-QRGIFPAAYV 53
>gnl|CDD|212865 cd11932, SH3_SH3RF2_2, Second Src Homology 3 domain of SH3 domain
containing ring finger 2. SH3RF2 is also called POSHER
(POSH-eliminating RING protein) or HEPP1 (heart protein
phosphatase 1-binding protein). It acts as an
anti-apoptotic regulator of the JNK pathway by binding
to and promoting the degradation of SH3RF1 (or POSH), a
scaffold protein that is required for pro-apoptotic JNK
activation. It may also play a role in cardiac
functions together with protein phosphatase 1. SH3RF2
contains an N-terminal RING finger domain and three SH3
domains. This model represents the second SH3 domain,
located C-terminal of the first SH3 domain at the
N-terminal half, of SH3RF2. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 57
Score = 51.8 bits (124), Expect = 1e-09
Identities = 17/36 (47%), Positives = 26/36 (72%)
Query: 36 LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
L K +++T+I RVD NW EG++G + GIFP+ +V
Sbjct: 22 LKFQKDDIITVISRVDENWAEGKLGDQVGIFPILFV 57
>gnl|CDD|212770 cd11836, SH3_Intersectin_1, First Src homology 3 domain (or SH3A)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The first SH3 domain (or SH3A) of
ITSN1 has been shown to bind many proteins including
Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP,
and CdGAP, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 50.8 bits (122), Expect = 3e-09
Identities = 21/57 (36%), Positives = 31/57 (54%), Gaps = 4/57 (7%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVME--KCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y ALY ++ +N DE+ + G+ + V E + GW G + G G FP NYVE+
Sbjct: 1 KYRALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELK--GKTGWFPANYVEK 55
Score = 37.0 bits (86), Expect = 3e-04
Identities = 16/52 (30%), Positives = 24/52 (46%), Gaps = 2/52 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGE--LVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
RA + F A+ E+S G+ V + + W G + + G FP YVE
Sbjct: 3 RALYAFEARNPDEISFQPGDIIQVDESQVAEPGWLAGELKGKTGWFPANYVE 54
>gnl|CDD|212835 cd11902, SH3_Nck2_2, Second Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The second SH3 domain of Nck
appears to prefer ligands containing the APxxPxR motif.
SH3 domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 50.8 bits (121), Expect = 3e-09
Identities = 25/54 (46%), Positives = 32/54 (59%), Gaps = 2/54 (3%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
+P + Y + +DEL L +G V VMEKC DGW+ GS +G G FP NYV
Sbjct: 1 IPAFVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSY--NGQIGWFPSNYV 52
Score = 41.1 bits (96), Expect = 1e-05
Identities = 21/53 (39%), Positives = 31/53 (58%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQQ 74
A KF +VA+ ELSLVKG VT++ + + W+ G + G FP YV ++
Sbjct: 3 AFVKFAYVAEREDELSLVKGSRVTVMEKCSDGWWRGSYNGQIGWFPSNYVVEE 55
>gnl|CDD|212810 cd11877, SH3_PIX, Src Homology 3 domain of Pak Interactive
eXchange factors. PIX proteins are Rho guanine
nucleotide exchange factors (GEFs), which activate
small GTPases by exchanging bound GDP for free GTP.
They act as GEFs for both Cdc42 and Rac 1, and have
been implicated in cell motility, adhesion, neurite
outgrowth, and cell polarity. Vertebrates contain two
proteins from the PIX subfamily, alpha-PIX and
beta-PIX. Alpha-PIX, also called ARHGEF6, is localized
in dendritic spines where it regulates spine
morphogenesis. Mutations in the ARHGEF6 gene cause
X-linked intellectual disability in humans. Beta-PIX
play roles in regulating neuroendocrine exocytosis,
focal adhesion maturation, cell migration, synaptic
vesicle localization, and insulin secretion. PIX
proteins contain an N-terminal SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains, and a C-terminal
leucine-zipper domain for dimerization. The SH3 domain
of PIX binds to an atypical PxxxPR motif in
p21-activated kinases (PAKs) with high affinity. The
binding of PAKs to PIX facilitate the localization of
PAKs to focal complexes and also localizes PAKs to PIX
targets Cdc43 and Rac, leading to the activation of
PAKs. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 50.4 bits (121), Expect = 3e-09
Identities = 21/52 (40%), Positives = 31/52 (59%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
RAKFNF ELS KG+++T+ + V+ W+EG + + G FP YV+
Sbjct: 1 LVRAKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGTLNGKTGWFPSNYVK 52
Score = 45.4 bits (108), Expect = 2e-07
Identities = 18/51 (35%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A +N++ N+DEL +G+ + V + + GW+ G+ +G G FP NYV+
Sbjct: 4 AKFNFEGTNEDELSFDKGDIITVTQVVEGGWWEGT--LNGKTGWFPSNYVK 52
>gnl|CDD|215659 pfam00018, SH3_1, SH3 domain. SH3 (Src homology 3) domains are
often indicative of a protein involved in signal
transduction related to cytoskeletal organisation. First
described in the Src cytoplasmic tyrosine kinase. The
structure is a partly opened beta barrel.
Length = 47
Score = 49.9 bits (120), Expect = 4e-09
Identities = 18/46 (39%), Positives = 27/46 (58%), Gaps = 1/46 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFP 146
ALY+Y + DEL ++G+ + V+EK DDGW+ G + G P
Sbjct: 2 ALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGK-EGLIP 46
Score = 46.8 bits (112), Expect = 7e-08
Identities = 14/47 (29%), Positives = 29/47 (61%), Gaps = 1/47 (2%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGR-IGTRRGIFPV 68
A +++ A+ ELS KG+++ ++ + D+ W++GR G + G+ P
Sbjct: 1 VALYDYTAREPDELSFKKGDIIIVLEKSDDGWWKGRLKGGKEGLIPS 47
>gnl|CDD|212790 cd11856, SH3_p47phox_like, Src homology 3 domains of the p47phox
subunit of NADPH oxidase and similar domains. This
family is composed of the tandem SH3 domains of p47phox
subunit of NADPH oxidase and Nox Organizing protein 1
(NoxO1), the four SH3 domains of Tks4 (Tyr kinase
substrate with four SH3 domains), the five SH3 domains
of Tks5, the SH3 domain of obscurin, Myosin-I, and
similar domains. Most members of this group also contain
Phox homology (PX) domains, except for obscurin and
Myosin-I. p47phox and NoxO1 are regulators of the
phagocytic NADPH oxidase complex (also called Nox2 or
gp91phox) and nonphagocytic NADPH oxidase Nox1,
respectively. They play roles in the activation of their
respective NADPH oxidase, which catalyzes the transfer
of electrons from NADPH to molecular oxygen to form
superoxide. Tks proteins are Src substrates and
scaffolding proteins that play important roles in the
formation of podosomes and invadopodia, the dynamic
actin-rich structures that are related to cell migration
and cancer cell invasion. Obscurin is a giant muscle
protein that plays important roles in the organization
and assembly of the myofibril and the sarcoplasmic
reticulum. Type I myosins (Myosin-I) are actin-dependent
motors in endocytic actin structures and actin patches.
They play roles in membrane traffic in endocytic and
secretory pathways, cell motility, and mechanosensing.
Myosin-I contains an N-terminal actin-activated ATPase,
a phospholipid-binding TH1 (tail homology 1) domain, and
a C-terminal extension which includes an F-actin-binding
TH2 domain, an SH3 domain, and an acidic peptide that
participates in activating the Arp2/3complex. The SH3
domain of myosin-I is required for myosin-I-induced
actin polymerization. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 49.9 bits (120), Expect = 5e-09
Identities = 24/55 (43%), Positives = 33/55 (60%), Gaps = 4/55 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDG-WYVGSSQRSGCFGTFPGNYVER 152
Y A+ +Y+ Q DDE+ L+EGE V V+EK D G WYV + G P +Y+E
Sbjct: 2 YVAIADYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGW---VPASYLEP 53
Score = 37.6 bits (88), Expect = 2e-04
Identities = 16/46 (34%), Positives = 29/46 (63%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
++ AQ E+SL +GE+V ++ + D+ W+ R G + G P +Y+E
Sbjct: 7 DYEAQGDDEISLQEGEVVEVLEKNDSGWWYVRKGDKEGWVPASYLE 52
>gnl|CDD|212864 cd11931, SH3_SH3RF3_2, Second Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with
GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1;
it also contains an N-terminal RING finger domain and
four SH3 domains. This model represents the second SH3
domain, located C-terminal of the first SH3 domain at
the N-terminal half, of SH3RF3. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 55
Score = 49.5 bits (118), Expect = 8e-09
Identities = 20/36 (55%), Positives = 27/36 (75%)
Query: 36 LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
L+ K E++T+IRRVD NW EG +G + GIFP+ YV
Sbjct: 20 LTFTKDEILTVIRRVDENWAEGMLGDKIGIFPILYV 55
>gnl|CDD|219499 pfam07653, SH3_2, Variant SH3 domain. SH3 (Src homology 3)
domains are often indicative of a protein involved in
signal transduction related to cytoskeletal
organisation. First described in the Src cytoplasmic
tyrosine kinase. The structure is a partly opened beta
barrel.
Length = 53
Score = 49.4 bits (119), Expect = 8e-09
Identities = 24/51 (47%), Positives = 34/51 (66%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
R F++VA ELSL KG++V ++ + DN W+EG G RRG+ P +YVE
Sbjct: 2 GRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEGERGGRRGLVPSSYVE 52
Score = 37.8 bits (89), Expect = 1e-04
Identities = 19/54 (35%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
+++Y + +EL L++G+ V V++K D+GW+ G +R G G P +YVE
Sbjct: 1 YGRVIFDYVATDPNELSLKKGDVVKVLDKDDNGWWEG--ERGGRRGLVPSSYVE 52
>gnl|CDD|212724 cd11790, SH3_Amphiphysin, Src Homology 3 domain of Amphiphysin and
related domains. Amphiphysins function primarily in
endocytosis and other membrane remodeling events. They
exist in several isoforms and mammals possess two
amphiphysin proteins from distinct genes. Amphiphysin I
proteins, enriched in the brain and nervous system,
contain domains that bind clathrin, Adaptor Protein
complex 2 (AP2), dynamin, and synaptojanin. They
function in synaptic vesicle endocytosis. Human
autoantibodies to amphiphysin I hinder GABAergic
signaling and contribute to the pathogenesis of
paraneoplastic stiff-person syndrome. Some amphiphysin
II isoforms, also called Bridging integrator 1 (Bin1),
are localized in many different tissues and may function
in intracellular vesicle trafficking. In skeletal
muscle, Bin1 plays a role in the organization and
maintenance of the T-tubule network. Mutations in Bin1
are associated with autosomal recessive centronuclear
myopathy. Amphiphysins contain an N-terminal BAR domain
with an additional N-terminal amphipathic helix (an
N-BAR), a variable central domain, and a C-terminal SH3
domain. The SH3 domain of amphiphysins bind proline-rich
motifs present in binding partners such as dynamin,
synaptojanin, and nsP3. It also belongs to a subset of
SH3 domains that bind ubiquitin in a site that overlaps
with the peptide binding site. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 64
Score = 48.9 bits (117), Expect = 2e-08
Identities = 20/57 (35%), Positives = 34/57 (59%), Gaps = 5/57 (8%)
Query: 101 ALYNYKPQNDDELELREGETVFVM-----EKCDDGWYVGSSQRSGCFGTFPGNYVER 152
A ++Y ++ DEL +G+ + V+ E+ D+GW +G + +GC G FP N+ ER
Sbjct: 7 ATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTER 63
Score = 26.9 bits (60), Expect = 1.6
Identities = 16/58 (27%), Positives = 26/58 (44%), Gaps = 7/58 (12%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLI-----RRVDNNWFEGRI--GTRRGIFPVTYVE 72
RA ++ A+ EL+ KG+++ +I D W G RG+FP + E
Sbjct: 5 VRATHDYTAEDTDELTFEKGDVILVIPFDDPEEQDEGWLMGVKESTGCRGVFPENFTE 62
>gnl|CDD|213006 cd12073, SH3_HS1, Src homology 3 domain of Hematopoietic lineage
cell-specific protein 1. HS1, also called HCLS1
(hematopoietic cell-specific Lyn substrate 1), is a
cortactin homolog expressed specifically in
hematopoietic cells. It is an actin regulatory protein
that binds the Arp2/3 complex and stabilizes branched
actin filaments. It is required for cell spreading and
signaling in lymphocytes. It regulates cytoskeletal
remodeling that controls lymphocyte trafficking, and it
also affects tissue invasion and infiltration of
leukemic B cells. Like cortactin, HS1 contains an
N-terminal acidic domain, several copies of a repeat
domain found in cortactin and HS1, a proline-rich
region, and a C-terminal SH3 domain. The N-terminal
region binds the Arp2/3 complex and F-actin, while the
C-terminal region acts as an adaptor or scaffold that
can connect varied proteins that bind the SH3 domain
within the actin network. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 48.7 bits (116), Expect = 2e-08
Identities = 22/51 (43%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ + DDE+ ET+ +E D+GW+ G+ G G FP NYVE
Sbjct: 5 ALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCH--GHRGLFPANYVE 53
Score = 41.0 bits (96), Expect = 1e-05
Identities = 18/53 (33%), Positives = 27/53 (50%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQQ 74
A A +++ + E+S E +T I VD W++G RG+FP YVE
Sbjct: 3 AVALYDYQGEGDDEISFDPQETITDIEMVDEGWWKGTCHGHRGLFPANYVELL 55
>gnl|CDD|212893 cd11960, SH3_Abp1_eu, Src homology 3 domain of eumetazoan
Actin-binding protein 1. Abp1, also called drebrin-like
protein, is an adaptor protein that functions in
receptor-mediated endocytosis and vesicle trafficking.
It contains an N-terminal actin-binding module, the
actin-depolymerizing factor (ADF) homology domain, a
helical domain, and a C-terminal SH3 domain. Mammalian
Abp1, unlike yeast Abp1, does not contain an acidic
domain that interacts with the Arp2/3 complex. It
regulates actin dynamics indirectly by interacting with
dynamin and WASP family proteins. Abp1 deficiency causes
abnormal organ structure and function of the spleen,
heart, and lung of mice. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 48.5 bits (116), Expect = 2e-08
Identities = 20/51 (39%), Positives = 32/51 (62%), Gaps = 1/51 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ +D E+ G+ + +E+ D+GW+ G+ G +G FP NYVE
Sbjct: 4 ALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGP-DGTYGLFPANYVE 53
Score = 35.5 bits (82), Expect = 0.001
Identities = 18/52 (34%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYVE 72
ARA +++ A E+S G+++T I ++D W+ G G+FP YVE
Sbjct: 2 ARALYDYQAADDTEISFDPGDIITDIEQIDEGWWRGTGPDGTYGLFPANYVE 53
>gnl|CDD|212774 cd11840, SH3_Intersectin_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fifth SH3 domain (or SH3E) of
ITSN1 has been shown to bind many protein partners
including SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2,
N-WASP, and synaptojanin-1, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 48.2 bits (115), Expect = 2e-08
Identities = 22/51 (43%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
AL+ Y QN+DEL ++G+ + V+ K D W+ G + +G G FP NYVE
Sbjct: 4 ALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRG--ELNGQTGLFPSNYVE 52
Score = 47.0 bits (112), Expect = 5e-08
Identities = 19/52 (36%), Positives = 31/52 (59%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
Q A F + AQ ELS KG+++ ++ + D +W+ G + + G+FP YVE
Sbjct: 1 QVIALFPYTAQNEDELSFQKGDIINVLSKDDPDWWRGELNGQTGLFPSNYVE 52
>gnl|CDD|212991 cd12058, SH3_MLK4, Src Homology 3 domain of Mixed Lineage Kinase 4.
MLK4 is a Serine/Threonine Kinase (STK), catalyzing the
transfer of the gamma-phosphoryl group from ATP to S/T
residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases (MAP3Ks,
MKKKs, MAPKKKs), which phosphorylate and activate MAPK
kinases (MAPKKs or MKKs or MAP2Ks), which in turn
phosphorylate and activate MAPKs during signaling
cascades that are important in mediating cellular
responses to extracellular signals. MLKs play roles in
immunity and inflammation, as well as in cell death,
proliferation, and cell cycle regulation. The specific
function of MLK4 is yet to be determined. Mutations in
the kinase domain of MLK4 have been detected in
colorectal cancers. MLK4 contains an SH3 domain, a
catalytic kinase domain, a leucine zipper, a
proline-rich region, and a CRIB domain that mediates
binding to GTP-bound Cdc42 and Rac. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 48.4 bits (115), Expect = 2e-08
Identities = 24/59 (40%), Positives = 33/59 (55%), Gaps = 7/59 (11%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEK-----CDDGWYVGSSQRSGCFGTFPGNYVER 152
+ ALY+Y+ +DEL LR G+ V V+ + DDGW+ G + G FP NYV R
Sbjct: 2 WTALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRHR--LGIFPANYVTR 58
Score = 36.5 bits (84), Expect = 6e-04
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 5/53 (9%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRR-----VDNNWFEGRIGTRRGIFPVTYV 71
A +++ A ELSL +G++V ++ + D+ W+ G+I R GIFP YV
Sbjct: 4 ALYDYEASGEDELSLRRGDVVEVLSQDAAVSGDDGWWAGKIRHRLGIFPANYV 56
>gnl|CDD|212697 cd11763, SH3_SNX9_like, Src Homology 3 domain of Sorting Nexin 9
and similar proteins. Sorting nexins (SNXs) are Phox
homology (PX) domain containing proteins that are
involved in regulating membrane traffic and protein
sorting in the endosomal system. SNXs differ from each
other in their lipid-binding specificity, subcellular
localization and specific function in the endocytic
pathway. This subfamily consists of SH3 domain
containing SNXs including SNX9, SNX18, SNX33, and
similar proteins. SNX9 is localized to plasma membrane
endocytic sites and acts primarily in clathrin-mediated
endocytosis, while SNX18 is localized to peripheral
endosomal structures, and acts in a trafficking pathway
that is clathrin-independent but relies on AP-1 and
PACS1. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 48.5 bits (116), Expect = 2e-08
Identities = 22/54 (40%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVM-EKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY++ Q EL LR GE + + + DGW G + R G G FP +YVE
Sbjct: 2 VRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSR-GEVGLFPSSYVE 54
Score = 40.8 bits (96), Expect = 1e-05
Identities = 23/54 (42%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIR-RVDNNWFEGR-IGTRRGIFPVTYVE 72
+ RA ++F +Q ELSL GE++T+ R V + W EGR G+FP +YVE
Sbjct: 1 KVRALYDFDSQPSGELSLRAGEVLTITRQDVGDGWLEGRNSRGEVGLFPSSYVE 54
>gnl|CDD|212764 cd11830, SH3_VAV_2, C-terminal (or second) Src homology 3 domain
of VAV proteins. VAV proteins function both as
cytoplasmic guanine nucleotide exchange factors (GEFs)
for Rho GTPases and scaffold proteins and they play
important roles in cell signaling by coupling cell
surface receptors to various effector functions. They
play key roles in processes that require cytoskeletal
reorganization including immune synapse formation,
phagocytosis, cell spreading, and platelet aggregation,
among others. Vertebrates have three VAV proteins
(VAV1, VAV2, and VAV3). VAV proteins contain several
domains that enable their function: N-terminal calponin
homology (CH), acidic, RhoGEF (also called
Dbl-homologous or DH), Pleckstrin Homology (PH), C1
(zinc finger), SH2, and two SH3 domains. The SH3 domain
of VAV is involved in the localization of proteins to
specific sites within the cell, by interacting with
proline-rich sequences within target proteins. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 48.4 bits (115), Expect = 2e-08
Identities = 21/53 (39%), Positives = 33/53 (62%), Gaps = 1/53 (1%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRV-DNNWFEGRIGTRRGIFPVTYVEQ 73
A+A+++F A+ ELSL +G++V + + W+ G I R G FP TYVE+
Sbjct: 2 AKARYDFCARDMRELSLKEGDVVKIYNKKGQQGWWRGEINGRIGWFPSTYVEE 54
Score = 36.8 bits (85), Expect = 4e-04
Identities = 19/52 (36%), Positives = 29/52 (55%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKC-DDGWYVGSSQRSGCFGTFPGNYVE 151
A Y++ ++ EL L+EG+ V + K GW+ G + +G G FP YVE
Sbjct: 4 ARYDFCARDMRELSLKEGDVVKIYNKKGQQGWWRG--EINGRIGWFPSTYVE 53
>gnl|CDD|212752 cd11818, SH3_Eve1_5, Fifth Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3
domain-containing protein 19 (SH3D19) or EEN-binding
protein (EBP), exists in multiple alternatively spliced
isoforms. The longest isoform contains five SH3 domain
in the C-terminal region and seven proline-rich motifs
in the N-terminal region. It is abundantly expressed in
skeletal muscle and heart, and may be involved in
regulating the activity of ADAMs (A disintegrin and
metalloproteases). Eve-1 interacts with EEN, an
endophilin involved in endocytosis and may be the
target of the MLL-EEN fusion protein that is implicated
in leukemogenesis. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 47.9 bits (114), Expect = 2e-08
Identities = 16/50 (32%), Positives = 28/50 (56%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTY 70
+ARA ++F + ELS G+++T + +D W G + + GIFP +
Sbjct: 1 KARALYDFTGENEDELSFKAGDIITELESIDEEWMSGELRGKSGIFPKNF 50
Score = 40.2 bits (94), Expect = 2e-05
Identities = 17/49 (34%), Positives = 28/49 (57%), Gaps = 2/49 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
ALY++ +N+DEL + G+ + +E D+ W G + G G FP N+
Sbjct: 4 ALYDFTGENEDELSFKAGDIITELESIDEEWMSG--ELRGKSGIFPKNF 50
>gnl|CDD|212985 cd12052, SH3_CIN85_1, First Src Homology 3 domain (SH3A) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1
(SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is
an adaptor protein that is involved in the
downregulation of receptor tyrosine kinases by
facilitating endocytosis through interaction with
endophilin-associated ubiquitin ligase Cbl proteins. It
is also important in many other cellular processes
including vesicle-mediated transport, cytoskeletal
remodelling, apoptosis, cell adhesion and migration,
and viral infection, among others. CIN85 exists as
multiple variants from alternative splicing; the main
variant contains three SH3 domains, a proline-rich
region, and a C-terminal coiled-coil domain. All of
these domains enable CIN85 to bind various protein
partners and assemble complexes that have been
implicated in many different functions. This alignment
model represents the first SH3 domain (SH3A) of CIN85;
SH3A binds to internal proline-rich motifs within the
proline-rich region. This intramolecular interaction
serves as a regulatory mechanism to keep CIN85 in a
closed conformation, preventing the recruitment of
other proteins. SH3A has also been shown to bind
ubiquitin and to an atypical PXXXPR motif at the
C-terminus of Cbl and the cytoplasmic end of the cell
adhesion protein CD2. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 48.0 bits (114), Expect = 3e-08
Identities = 20/53 (37%), Positives = 35/53 (66%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+A +F++ AQ EL++ G+++T I++ D W+EG I RRG+FP +V +
Sbjct: 1 EAIVEFDYKAQHEDELTITVGDIITKIKKDDGGWWEGEIKGRRGLFPDNFVRE 53
Score = 41.4 bits (97), Expect = 8e-06
Identities = 18/48 (37%), Positives = 30/48 (62%), Gaps = 2/48 (4%)
Query: 103 YNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
++YK Q++DEL + G+ + ++K D GW+ G + G G FP N+V
Sbjct: 6 FDYKAQHEDELTITVGDIITKIKKDDGGWWEG--EIKGRRGLFPDNFV 51
>gnl|CDD|212767 cd11833, SH3_Stac_1, First C-terminal Src homology 3 domain of SH3
and cysteine-rich domain-containing (Stac) proteins.
Stac proteins are putative adaptor proteins that contain
a cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac1 and
Stac3 contain two SH3 domains while Stac2 contains a
single SH3 domain at the C-terminus. This model
represents the first C-terminal SH3 domain of Stac1 and
Stac3, and the single C-terminal SH3 domain of Stac2.
Stac1 and Stac2 have been found to be expressed
differently in mature dorsal root ganglia (DRG) neurons.
Stac1 is mainly expressed in peptidergic neurons while
Stac2 is found in a subset of nonpeptidergic and all
trkB+ neurons. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 48.3 bits (115), Expect = 3e-08
Identities = 19/55 (34%), Positives = 35/55 (63%), Gaps = 2/55 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y ALY +KPQ +++LE+R G+ + +++ ++ W+ G + G FP N+V+R
Sbjct: 1 TYVALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDR--VGFFPANFVQR 53
Score = 41.7 bits (98), Expect = 6e-06
Identities = 15/50 (30%), Positives = 30/50 (60%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
A + F Q + +L + G+ +TL+ + +W++G+I R G FP +V++
Sbjct: 4 ALYKFKPQENEDLEMRPGDKITLLDDSNEDWWKGKIEDRVGFFPANFVQR 53
>gnl|CDD|212707 cd11773, SH3_Sla1p_1, First Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 48.2 bits (115), Expect = 3e-08
Identities = 22/56 (39%), Positives = 33/56 (58%), Gaps = 5/56 (8%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWY-----VGSSQRSGCFGTFPGNY 149
Y ALY+Y+PQ +DEL ++E + ++++EK DD W+ V SS G P Y
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
Score = 30.5 bits (69), Expect = 0.080
Identities = 12/56 (21%), Positives = 31/56 (55%), Gaps = 7/56 (12%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-------RRGIFPVTY 70
+A +++ QT EL++ + +++ L+ + D++W++ ++ G+ P TY
Sbjct: 2 YKALYDYEPQTEDELTIQEDDILYLLEKSDDDWWKVKLKVNSSDDDEPVGLVPATY 57
>gnl|CDD|212894 cd11961, SH3_Abp1_fungi_C2, Second C-terminal Src homology 3
domain of Fungal Actin-binding protein 1. Abp1 is an
adaptor protein that functions in receptor-mediated
endocytosis and vesicle trafficking. It contains an
N-terminal actin-binding module, the
actin-depolymerizing factor (ADF) homology domain, a
central proline-rich region, and a C-terminal SH3
domain (many yeast Abp1 proteins contain two C-terminal
SH3 domains). Yeast Abp1 also contains two acidic
domains that bind directly to the Arp2/3 complex, which
is required to initiate actin polymerization. The SH3
domain of yeast Abp1 binds and localizes the kinases,
Ark1p and Prk1p, which facilitate actin patch
disassembly following vesicle internalization. It also
mediates the localization to the actin patch of the
synaptojanin-like protein, Sjl2p, which plays a key
role in endocytosis. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 47.9 bits (114), Expect = 3e-08
Identities = 18/51 (35%), Positives = 29/51 (56%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A+A +++ A ELS + + + I VD++W+ G RG+FP YVE
Sbjct: 2 AKALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECHGSRGLFPSNYVE 52
Score = 46.0 bits (109), Expect = 2e-07
Identities = 21/52 (40%), Positives = 28/52 (53%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
ALY+Y D+EL E + + +E DD W++G G G FP NYVE
Sbjct: 4 ALYDYDAAEDNELSFFENDKIINIEFVDDDWWLGECH--GSRGLFPSNYVEL 53
>gnl|CDD|212884 cd11951, SH3_GRAP_C, C-terminal Src homology 3 domain of
GRB2-related adaptor protein. GRAP is a GRB-2 like
adaptor protein that is highly expressed in lymphoid
tissues. It acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. It
has been identified as a regulator of TGFbeta signaling
in diabetic kidney tubules and may have a role in the
pathogenesis of the disease. GRAP contains an
N-terminal SH3 domain, a central SH2 domain, and a
C-terminal SH3 domain. The C-terminal SH3 domains
(SH3c) of the related proteins, GRB2 and GRAP2, have
been shown to bind to classical PxxP motif ligands, as
well as to non-classical motifs. GRB2 SH3c binds Gab2
(Grb2-associated binder 2) through epitopes containing
RxxK motifs, while the SH3c of GRAP2 binds to the
phosphatase-like protein HD-PTP via a RxxxxK motif. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 47.9 bits (114), Expect = 3e-08
Identities = 18/52 (34%), Positives = 31/52 (59%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+A+++F A+ +LS +G+++ ++ D NW+ GRI R G FP YV
Sbjct: 2 VQAQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRISGRVGFFPRNYVHP 53
Score = 37.9 bits (88), Expect = 1e-04
Identities = 17/50 (34%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A Y++ ++ +L R G+ + V++ D W+ G SG G FP NYV
Sbjct: 4 AQYDFSAEDPSQLSFRRGDIIEVLDCPDPNWWRGRI--SGRVGFFPRNYV 51
>gnl|CDD|213018 cd12142, SH3_D21-like, Src Homology 3 domain of SH3
domain-containing protein 21 (SH3D21) and similar
proteins. N-terminal SH3 domain of the uncharacterized
protein SH3 domain-containing protein 21, and similar
uncharacterized domains, it belongs to the CD2AP-like_3
subfamily of proteins. The CD2AP-like_3 subfamily is
composed of the third SH3 domain (SH3C) of CD2AP, CIN85
(Cbl-interacting protein of 85 kDa), and similar
domains. CD2AP and CIN85 are adaptor proteins that bind
to protein partners and assemble complexes that have
been implicated in T cell activation, kidney function,
and apoptosis of neuronal cells. They also associate
with endocytic proteins, actin cytoskeleton components,
and other adaptor proteins involved in receptor tyrosine
kinase (RTK) signaling. CD2AP and the main isoform of
CIN85 contain three SH3 domains, a proline-rich region,
and a C-terminal coiled-coil domain. All of these
domains enable CD2AP and CIN85 to bind various protein
partners and assemble complexes that have been
implicated in many different functions. SH3C of both
proteins have been shown to bind to ubiquitin. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 47.8 bits (114), Expect = 3e-08
Identities = 20/55 (36%), Positives = 30/55 (54%), Gaps = 4/55 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKC--DDGWYVGSSQRSGCFGTFPGNYVE 151
L++Y P DEL L++G+ + V+ K D+GW+ G G G FP N+V
Sbjct: 2 CRVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELN--GRRGFFPDNFVM 54
Score = 44.4 bits (105), Expect = 5e-07
Identities = 18/52 (34%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRV--DNNWFEGRIGTRRGIFPVTYVE 72
R F++ EL+L KG+++ +I + D W+EG + RRG FP +V
Sbjct: 3 RVLFDYNPVAPDELALKKGDVIEVISKETEDEGWWEGELNGRRGFFPDNFVM 54
>gnl|CDD|212761 cd11827, SH3_MyoIe_If_like, Src homology 3 domain of Myosins Ie,
If, and similar proteins. Myosins Ie (MyoIe) and If
(MyoIf) are nonmuscle, unconventional, long tailed,
class I myosins containing an N-terminal motor domain
and a myosin tail with TH1, TH2, and SH3 domains. MyoIe
interacts with the endocytic proteins, dynamin and
synaptojanin-1, through its SH3 domain; it may play a
role in clathrin-dependent endocytosis. In the kidney,
MyoIe is critical for podocyte function and normal
glomerular filtration. Mutations in MyoIe is associated
with focal segmental glomerulosclerosis, a disease
characterized by massive proteinuria and progression to
end-stage kidney disease. MyoIf is predominantly
expressed in the immune system; it plays a role in
immune cell motility and innate immunity. Mutations in
MyoIf may be associated with the loss of hearing. The
MyoIf gene has also been found to be fused to the MLL
(Mixed lineage leukemia) gene in infant acute myeloid
leukemias (AML). SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 47.4 bits (113), Expect = 4e-08
Identities = 22/52 (42%), Positives = 32/52 (61%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
ALY Y Q+ DEL EG+ + ++++ GW+ G + G G FPGNYVE+
Sbjct: 4 ALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTG--RLRGKEGLFPGNYVEK 53
Score = 43.6 bits (103), Expect = 1e-06
Identities = 17/53 (32%), Positives = 33/53 (62%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
Q +A + + AQ ELS +G+++ +++ + W+ GR+ + G+FP YVE+
Sbjct: 1 QCKALYAYDAQDTDELSFNEGDIIEILKEDPSGWWTGRLRGKEGLFPGNYVEK 53
>gnl|CDD|212863 cd11930, SH3_SH3RF1_2, Second Src Homology 3 domain of SH3 domain
containing ring finger protein 1, an E3
ubiquitin-protein ligase. SH3RF1 is also called POSH
(Plenty of SH3s) or SH3MD2 (SH3 multiple domains
protein 2). It is a scaffold protein that acts as an E3
ubiquitin-protein ligase. It plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF1 also enhances the ubiquitination of ROMK1
potassium channel resulting in its increased
endocytosis. It contains an N-terminal RING finger
domain and four SH3 domains. This model represents the
second SH3 domain, located C-terminal of the first SH3
domain at the N-terminal half, of SH3RF1. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 47.3 bits (112), Expect = 6e-08
Identities = 19/36 (52%), Positives = 27/36 (75%)
Query: 36 LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
L K +++T+IRRVD NW EG +G + GIFP++YV
Sbjct: 20 LPFAKDDILTVIRRVDENWAEGMLGDKIGIFPISYV 55
>gnl|CDD|212799 cd11865, SH3_Nbp2-like, Src Homology 3 domain of Saccharomyces
cerevisiae Nap1-binding protein 2 and similar fungal
proteins. This subfamily includes Saccharomyces
cerevisiae Nbp2 (Nucleosome assembly protein 1
(Nap1)-binding protein 2), Schizosaccharomyces pombe
Skb5, and similar proteins. Nbp2 interacts with Nap1,
which is essential for maintaining proper nucleosome
structures in transcription and replication. It is also
the binding partner of the yeast type II protein
phosphatase Ptc1p and serves as a scaffolding protein
that brings seven kinases in close contact to Ptc1p.
Nbp2 plays a role many cell processes including
organelle inheritance, mating hormone response, cell
wall stress, mitotic cell growth at elevated
temperatures, and high osmolarity. Skb5 interacts with
the p21-activated kinase (PAK) homolog Shk1, which is
critical for fission yeast cell viability. Skb5
activates Shk1 and plays a role in regulating cell
morphology and growth under hypertonic conditions. Nbp2
and Skb5 contain an SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 47.1 bits (112), Expect = 7e-08
Identities = 17/51 (33%), Positives = 30/51 (58%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+++P++D+EL EG+ +F++ K GW + + G G P +V
Sbjct: 4 ALYDFEPEHDNELGFAEGQILFILYKHGQGWLIAEDESGGKTGLVPEEFVS 54
>gnl|CDD|212928 cd11995, SH3_Intersectin1_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The fifth SH3 domain (or SH3E) of ITSN1 has
been shown to bind many protein partners including
SGIP1, Sos1, dynamin1/2, CIN85, c-Cbl, SHIP2, N-WASP,
and synaptojanin-1, among others. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 46.5 bits (110), Expect = 1e-07
Identities = 21/51 (41%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
+Y+Y QNDDEL +G+ + V+ K D W+ G + +G G FP NYV+
Sbjct: 5 GMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKG--ELNGQVGLFPSNYVK 53
Score = 40.7 bits (95), Expect = 2e-05
Identities = 15/52 (28%), Positives = 32/52 (61%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
Q +++ AQ EL+ KG+++ ++ + D +W++G + + G+FP YV+
Sbjct: 2 QVIGMYDYTAQNDDELAFSKGQIINVLNKEDPDWWKGELNGQVGLFPSNYVK 53
>gnl|CDD|212805 cd11872, SH3_DOCK_AB, Src Homology 3 domain of Class A and B
Dedicator of Cytokinesis proteins. DOCK proteins are
atypical guanine nucleotide exchange factors (GEFs) that
lack the conventional Dbl homology (DH) domain. They are
divided into four classes (A-D) based on sequence
similarity and domain architecture: class A includes
Dock1, 2 and 5; class B includes Dock3 and 4; class C
includes Dock6, 7, and 8; and class D includes Dock9, 10
and 11. All DOCKs contain two homology domains: the
DHR-1 (Dock homology region-1), also called CZH1 (CED-5,
Dock180, and MBC-zizimin homology 1), and DHR-2 (also
called CZH2 or Docker). The DHR-1 domain binds
phosphatidylinositol-3,4,5-triphosphate while DHR-2
contains the catalytic activity for Rac and/or Cdc42.
This subfamily includes only Class A and B DOCKs, which
also contain an SH3 domain at the N-terminal region and
a PxxP motif at the C-terminus. Class A/B DOCKs are
mostly specific GEFs for Rac, except Dock4 which
activates the Ras family GTPase Rap1, probably
indirectly through interaction with Rap regulatory
proteins. The SH3 domain of class A/B DOCKs have been
shown to bind Elmo, a scaffold protein that promotes GEF
activity of DOCKs by releasing DHR-2 autoinhibition by
the intramolecular SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 46.4 bits (111), Expect = 1e-07
Identities = 21/51 (41%), Positives = 34/51 (66%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRS-GCFGTFPGNYV 150
A+YN++ + +L L+ G+TV ++E+C +GWY G S R+ G FP +YV
Sbjct: 4 AIYNFQGDGEHQLSLQVGDTVQILEEC-EGWYRGFSLRNKSLKGIFPKSYV 53
Score = 27.2 bits (61), Expect = 1.1
Identities = 16/51 (31%), Positives = 27/51 (52%), Gaps = 4/51 (7%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG-RIGTR--RGIFPVTYV 71
A +NF +LSL G+ V ++ + W+ G + + +GIFP +YV
Sbjct: 4 AIYNFQGDGEHQLSLQVGDTVQILEECEG-WYRGFSLRNKSLKGIFPKSYV 53
>gnl|CDD|212921 cd11988, SH3_Intersectin2_1, First Src homology 3 domain (or SH3A)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The first SH3 domain (or
SH3A) of ITSN2 is expected to bind many protein
partners, similar to ITSN1 which has been shown to bind
Sos1, dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP,
and CdGAP, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 46.4 bits (110), Expect = 1e-07
Identities = 26/58 (44%), Positives = 34/58 (58%), Gaps = 4/58 (6%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKC--DDGWYVGSSQRSGCFGTFPGNYVER 152
V Y ALY ++ +N DE+ G+ + V EK + GW GS Q G FG FP NYVE+
Sbjct: 2 VNYRALYPFEARNHDEMSFNAGDIIQVDEKTVGEPGWLYGSFQ--GNFGWFPCNYVEK 57
Score = 29.5 bits (66), Expect = 0.17
Identities = 18/57 (31%), Positives = 26/57 (45%), Gaps = 10/57 (17%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNN------WFEGRIGTRRGIFPVTYVEQ 73
RA + F A+ H E+S G+++ +VD W G G FP YVE+
Sbjct: 5 RALYPFEARNHDEMSFNAGDII----QVDEKTVGEPGWLYGSFQGNFGWFPCNYVEK 57
>gnl|CDD|212892 cd11959, SH3_Cortactin, Src homology 3 domain of Cortactin.
Cortactin was originally identified as a substrate of
Src kinase. It is an actin regulatory protein that binds
to the Arp2/3 complex and stabilizes branched actin
filaments. It is involved in cellular processes that
affect cell motility, adhesion, migration, endocytosis,
and invasion. It is expressed ubiquitously except in
hematopoietic cells, where the homolog hematopoietic
lineage cell-specific 1 (HS1) is expressed instead.
Cortactin contains an N-terminal acidic domain, several
copies of a repeat domain found in cortactin and HS1, a
proline-rich region, and a C-terminal SH3 domain. The
N-terminal region interacts with the Arp2/3 complex and
F-actin, and is crucial in regulating branched actin
assembly. Cortactin also serves as a scaffold and
provides a bridge to the actin cytoskeleton for membrane
trafficking and signaling proteins that bind to its SH3
domain. Binding partners for the SH3 domain of cortactin
include dynamin2, N-WASp, MIM, FGD1, among others. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 45.9 bits (109), Expect = 2e-07
Identities = 20/51 (39%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ +DDE+ + + +E D+GW+ G + G +G FP NYVE
Sbjct: 4 ALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCR--GKYGLFPANYVE 52
Score = 35.5 bits (82), Expect = 0.001
Identities = 16/51 (31%), Positives = 27/51 (52%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A A +++ A E+S +++T I +D W+ G + G+FP YVE
Sbjct: 2 AVALYDYQAADDDEISFDPDDIITNIEMIDEGWWRGVCRGKYGLFPANYVE 52
>gnl|CDD|212695 cd11761, SH3_FCHSD_1, First Src Homology 3 domain of FCH and double
SH3 domains proteins. This group is composed of FCH and
double SH3 domains protein 1 (FCHSD1) and FCHSD2. These
proteins have a common domain structure consisting of an
N-terminal F-BAR (FES-CIP4 Homology and
Bin/Amphiphysin/Rvs), two SH3, and C-terminal
proline-rich domains. They have only been characterized
in silico and their functions remain unknown. This group
also includes the insect protein, nervous wreck, which
acts as a regulator of synaptic growth signaling. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 45.8 bits (109), Expect = 2e-07
Identities = 24/57 (42%), Positives = 33/57 (57%), Gaps = 2/57 (3%)
Query: 96 PVPYHALYNYKPQNDDELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYVE 151
PV LY+Y+ Q DEL + EGE + V+E D DGW ++ SG G P NY++
Sbjct: 1 PVTCKVLYSYEAQRPDELTITEGEELEVIEDGDGDGWVKARNK-SGEVGYVPENYLQ 56
>gnl|CDD|212911 cd11978, SH3_VAV3_2, C-terminal (or second) Src homology 3 domain
of VAV3 protein. VAV3 is ubiquitously expressed and
functions as a phosphorylation-dependent guanine
nucleotide exchange factor (GEF) for RhoA, RhoG, and
Rac1. It has been implicated to function in the
hematopoietic, bone, cerebellar, and cardiovascular
systems. VAV3 is essential in axon guidance in neurons
that control blood pressure and respiration. It is
overexpressed in prostate cancer cells and it plays a
role in regulating androgen receptor transcriptional
activity. VAV proteins contain several domains that
enable their function: N-terminal calponin homology
(CH), acidic, RhoGEF (also called Dbl-homologous or
DH), Pleckstrin Homology (PH), C1 (zinc finger), SH2,
and two SH3 domains. The SH3 domain of VAV is involved
in the localization of proteins to specific sites
within the cell, by interacting with proline-rich
sequences within target proteins. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 45.8 bits (108), Expect = 2e-07
Identities = 23/56 (41%), Positives = 35/56 (62%), Gaps = 1/56 (1%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTL-IRRVDNNWFEGRIGTRRGIFPVTYVEQQ 74
G A A+++F A+ ELSL+KG++V + + N W+ G + R G FP TYVE+
Sbjct: 1 GIAIARYDFCARDMRELSLLKGDVVKIYTKMSTNGWWRGEVNGRVGWFPSTYVEED 56
>gnl|CDD|212754 cd11820, SH3_STAM, Src homology 3 domain of Signal Transducing
Adaptor Molecules. STAMs were discovered as proteins
that are highly phosphorylated following cytokine and
growth factor stimulation. They function in cytokine
signaling and surface receptor degradation, as well as
regulate Golgi morphology. They associate with many
proteins including Jak2 and Jak3 tyrosine kinases, Hrs,
AMSH, and UBPY. STAM adaptor proteins contain VHS
(Vps27, Hrs, STAM homology), ubiquitin interacting
(UIM), and SH3 domains. There are two vertebrate STAMs,
STAM1 and STAM2, which may be functionally redundant;
vertebrate STAMs contain ITAM motifs. They are part of
the endosomal sorting complex required for transport
(ESCRT-0). STAM2 deficiency in mice did not cause any
obvious abnormality, while STAM1 deficiency resulted in
growth retardation. Loss of both STAM1 and STAM2 in mice
proved lethal, indicating that STAMs are important for
embryonic development. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 45.9 bits (109), Expect = 2e-07
Identities = 19/52 (36%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
ALY+++ D+EL + GE + V++ D W+ GS+ R G FP N+V
Sbjct: 5 ALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGE--GLFPANFVTA 54
Score = 38.6 bits (90), Expect = 8e-05
Identities = 17/52 (32%), Positives = 29/52 (55%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+ RA ++F A EL+ GE++T++ D NW++G G+FP +V
Sbjct: 1 RKVRALYDFEAAEDNELTFKAGEIITVLDDSDPNWWKGSNHRGEGLFPANFV 52
>gnl|CDD|212910 cd11977, SH3_VAV2_2, C-terminal (or second) Src homology 3 domain
of VAV2 protein. VAV2 is widely expressed and
functions as a guanine nucleotide exchange factor (GEF)
for RhoA, RhoB and RhoG and also activates Rac1 and
Cdc42. It is implicated in many cellular and
physiological functions including blood pressure
control, eye development, neurite outgrowth and
branching, EGFR endocytosis and degradation, and cell
cluster morphology, among others. It has been reported
to associate with Nek3. VAV proteins contain several
domains that enable their function: N-terminal calponin
homology (CH), acidic, RhoGEF (also called
Dbl-homologous or DH), Pleckstrin Homology (PH), C1
(zinc finger), SH2, and two SH3 domains. The SH3 domain
of VAV is involved in the localization of proteins to
specific sites within the cell, by interacting with
proline-rich sequences within target proteins. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 45.8 bits (108), Expect = 2e-07
Identities = 24/57 (42%), Positives = 36/57 (63%), Gaps = 2/57 (3%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRV--DNNWFEGRIGTRRGIFPVTYVEQQ 74
G A A++NF A+ ELSL +G++V + R+ D W++G R G FP TYVE++
Sbjct: 1 GTAVARYNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGETNGRIGWFPSTYVEEE 57
Score = 37.3 bits (86), Expect = 3e-04
Identities = 21/53 (39%), Positives = 30/53 (56%), Gaps = 4/53 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKC--DDGWYVGSSQRSGCFGTFPGNYVE 151
A YN+ ++ EL LREG+ V + + D GW+ G + +G G FP YVE
Sbjct: 5 ARYNFAARDMRELSLREGDVVRIYSRIGGDQGWWKGET--NGRIGWFPSTYVE 55
>gnl|CDD|212809 cd11876, SH3_MLK, Src Homology 3 domain of Mixed Lineage Kinases.
MLKs are Serine/Threonine Kinases (STKs), catalyzing the
transfer of the gamma-phosphoryl group from ATP to S/T
residues on protein substrates. MLKs act as
mitogen-activated protein kinase kinase kinases (MAP3Ks,
MKKKs, MAPKKKs), which phosphorylate and activate MAPK
kinases (MAPKKs or MKKs or MAP2Ks), which in turn
phosphorylate and activate MAPKs during signaling
cascades that are important in mediating cellular
responses to extracellular signals. MLKs play roles in
immunity and inflammation, as well as in cell death,
proliferation, and cell cycle regulation. Mammals have
four MLKs (MLK1-4), mostly conserved in vertebrates,
which contain an SH3 domain, a catalytic kinase domain,
a leucine zipper, a proline-rich region, and a CRIB
domain that mediates binding to GTP-bound Cdc42 and Rac.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 46.0 bits (109), Expect = 2e-07
Identities = 22/55 (40%), Positives = 30/55 (54%), Gaps = 7/55 (12%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK-----CDDGWYVGSSQRSGCFGTFPGNYV 150
AL++Y + +DEL LR G+ V V+ K D+GW+ G G FP NYV
Sbjct: 4 ALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDK--VGIFPSNYV 56
Score = 39.0 bits (91), Expect = 6e-05
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 5/53 (9%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRR-----VDNNWFEGRIGTRRGIFPVTYV 71
A F++ A+ EL+L +G+ V ++ + D W+ G+IG + GIFP YV
Sbjct: 4 ALFDYDARGEDELTLRRGQPVEVLSKDAAVSGDEGWWTGKIGDKVGIFPSNYV 56
>gnl|CDD|212696 cd11762, SH3_FCHSD_2, Second Src Homology 3 domain of FCH and
double SH3 domains proteins. This group is composed of
FCH and double SH3 domains protein 1 (FCHSD1) and
FCHSD2. These proteins have a common domain structure
consisting of an N-terminal F-BAR (FES-CIP4 Homology
and Bin/Amphiphysin/Rvs), two SH3, and C-terminal
proline-rich domains. They have only been characterized
in silico and their functions remain unknown. This
group also includes the insect protein, nervous wreck,
which acts as a regulator of synaptic growth signaling.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 45.9 bits (109), Expect = 2e-07
Identities = 20/56 (35%), Positives = 34/56 (60%), Gaps = 4/56 (7%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRR----VDNNWFEGRIGTRRGIFPVTYVEQ 73
RA +++ AQ+ ELS +G ++ ++R+ VD+ W+EG R G+FP VE+
Sbjct: 2 VRALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEGEFNGRVGVFPSLVVEE 57
Score = 42.4 bits (100), Expect = 4e-06
Identities = 22/55 (40%), Positives = 32/55 (58%), Gaps = 6/55 (10%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK----CDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ Q+D+EL EG + ++ K DDGW+ G + +G G FP VE
Sbjct: 4 ALYDYEAQSDEELSFPEGAIIRILRKDDNGVDDGWWEG--EFNGRVGVFPSLVVE 56
>gnl|CDD|212750 cd11816, SH3_Eve1_3, Third Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3
domain-containing protein 19 (SH3D19) or EEN-binding
protein (EBP), exists in multiple alternatively spliced
isoforms. The longest isoform contains five SH3 domain
in the C-terminal region and seven proline-rich motifs
in the N-terminal region. It is abundantly expressed in
skeletal muscle and heart, and may be involved in
regulating the activity of ADAMs (A disintegrin and
metalloproteases). Eve-1 interacts with EEN, an
endophilin involved in endocytosis and may be the
target of the MLL-EEN fusion protein that is implicated
in leukemogenesis. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 51
Score = 45.5 bits (108), Expect = 2e-07
Identities = 17/50 (34%), Positives = 29/50 (58%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A+F+F + ELS +G+++TL V W +G + + GIFP+ +V
Sbjct: 2 CVARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKGELNGKIGIFPLNFV 51
Score = 35.1 bits (81), Expect = 0.002
Identities = 15/50 (30%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A ++++ + +DEL EG+ + + E + W G + +G G FP N+V
Sbjct: 4 ARFDFEGEQEDELSFSEGDVITLKEYVGEEWAKG--ELNGKIGIFPLNFV 51
>gnl|CDD|212860 cd11927, SH3_SH3RF1_1, First Src Homology 3 domain of SH3 domain
containing ring finger protein 1, an E3
ubiquitin-protein ligase. SH3RF1 is also called POSH
(Plenty of SH3s) or SH3MD2 (SH3 multiple domains
protein 2). It is a scaffold protein that acts as an E3
ubiquitin-protein ligase. It plays a role in calcium
homeostasis through the control of the ubiquitin domain
protein Herp. It may also have a role in regulating
death receptor mediated and JNK mediated apoptosis.
SH3RF1 also enhances the ubiquitination of ROMK1
potassium channel resulting in its increased
endocytosis. It contains an N-terminal RING finger
domain and four SH3 domains. This model represents the
first SH3 domain, located at the N-terminal half, of
SH3RF1. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 45.7 bits (108), Expect = 2e-07
Identities = 17/51 (33%), Positives = 30/51 (58%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
A+A +N+ + +L KG+++ L R+VD NW+ G + G FP +V+
Sbjct: 3 AKALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHGEVNGIHGFFPTNFVQ 53
Score = 39.2 bits (91), Expect = 6e-05
Identities = 17/51 (33%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALYNY+ + +L+ +G+ + + + D+ WY G + +G G FP N+V+
Sbjct: 5 ALYNYEGKEPGDLKFSKGDIIILRRQVDENWYHG--EVNGIHGFFPTNFVQ 53
>gnl|CDD|212994 cd12061, SH3_betaPIX, Src Homology 3 domain of beta-Pak
Interactive eXchange factor. Beta-PIX, also called Rho
guanine nucleotide exchange factor 7 (ARHGEF7) or Cool
(Cloned out of Library)-1, activates small GTPases by
exchanging bound GDP for free GTP. It acts as a GEF for
both Cdc42 and Rac 1, and plays important roles in
regulating neuroendocrine exocytosis, focal adhesion
maturation, cell migration, synaptic vesicle
localization, and insulin secretion. PIX proteins
contain an N-terminal SH3 domain followed by RhoGEF
(also called Dbl-homologous or DH) and Pleckstrin
Homology (PH) domains, and a C-terminal leucine-zipper
domain for dimerization. The SH3 domain of PIX binds to
an atypical PxxxPR motif in p21-activated kinases
(PAKs) with high affinity. The binding of PAKs to PIX
facilitate the localization of PAKs to focal complexes
and also localizes PAKs to PIX targets Cdc43 and Rac,
leading to the activation of PAKs. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 45.4 bits (107), Expect = 2e-07
Identities = 21/51 (41%), Positives = 28/51 (54%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
RAKFNF ELS KG+++ + R + W+EG R G FP YV +
Sbjct: 3 RAKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGTHNGRTGWFPSNYVRE 53
Score = 39.7 bits (92), Expect = 4e-05
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A +N++ N+DEL +G+ + V + GW+ G+ +G G FP NYV
Sbjct: 4 AKFNFQQTNEDELSFSKGDVIHVTRVEEGGWWEGT--HNGRTGWFPSNYV 51
>gnl|CDD|212777 cd11843, SH3_PACSIN, Src homology 3 domain of Protein kinase C and
Casein kinase Substrate in Neurons (PACSIN) proteins.
PACSINs, also called Synaptic dynamin-associated
proteins (Syndapins), act as regulators of cytoskeletal
and membrane dynamics. They bind both dynamin and
Wiskott-Aldrich syndrome protein (WASP), and may provide
direct links between the actin cytoskeletal machinery
through WASP and dynamin-dependent endocytosis.
Vetebrates harbor three isoforms with distinct
expression patterns and specific functions. PACSINs
contain an N-terminal F-BAR domain and a C-terminal SH3
domain. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 45.5 bits (108), Expect = 3e-07
Identities = 22/55 (40%), Positives = 31/55 (56%), Gaps = 3/55 (5%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYVE 151
P ALY+Y+ Q DEL + G+ + +E+ D+ GW G G G +P NYVE
Sbjct: 1 PVRALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKGRLD--GRVGLYPANYVE 53
Score = 35.9 bits (83), Expect = 9e-04
Identities = 18/51 (35%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 23 RAKFNFVAQTHLELSLVKGELVT-LIRRVDNNWFEGRIGTRRGIFPVTYVE 72
RA +++ Q ELS G+++T L + W +GR+ R G++P YVE
Sbjct: 3 RALYDYEGQESDELSFKAGDILTKLEEEDEQGWCKGRLDGRVGLYPANYVE 53
>gnl|CDD|212993 cd12060, SH3_alphaPIX, Src Homology 3 domain of alpha-Pak
Interactive eXchange factor. Alpha-PIX, also called
Rho guanine nucleotide exchange factor 6 (ARHGEF6) or
Cool (Cloned out of Library)-2, activates small GTPases
by exchanging bound GDP for free GTP. It acts as a GEF
for both Cdc42 and Rac 1, and is localized in dendritic
spines where it regulates spine morphogenesis. It
controls dendritic length and spine density in the
hippocampus. Mutations in the ARHGEF6 gene cause
X-linked intellectual disability in humans. PIX
proteins contain an N-terminal SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains, and a C-terminal
leucine-zipper domain for dimerization. The SH3 domain
of PIX binds to an atypical PxxxPR motif in
p21-activated kinases (PAKs) with high affinity. The
binding of PAKs to PIX facilitate the localization of
PAKs to focal complexes and also localizes PAKs to PIX
targets Cdc43 and Rac, leading to the activation of
PAKs. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 45.4 bits (107), Expect = 3e-07
Identities = 18/51 (35%), Positives = 30/51 (58%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+A+FNF ELS+ KG+++ + R + W+EG + + G FP YV +
Sbjct: 5 KARFNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGTLNGKTGWFPSNYVRE 55
Score = 42.7 bits (100), Expect = 3e-06
Identities = 19/51 (37%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A +N+K N+DEL + +G+ ++V + GW+ G+ +G G FP NYV
Sbjct: 6 ARFNFKQTNEDELSVCKGDIIYVTRVEEGGWWEGT--LNGKTGWFPSNYVR 54
>gnl|CDD|212815 cd11882, SH3_GRAF-like, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase and similar
proteins. This subfamily is composed of Rho GTPase
activating proteins (GAPs) with similarity to GRAF.
Members contain an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, a Rho GAP domain, and
a C-terminal SH3 domain. Although vertebrates harbor
four Rho GAPs in the GRAF subfamily including GRAF,
GRAF2, GRAF3, and Oligophrenin-1 (OPHN1), only three
are included in this model. OPHN1 contains the BAR, PH
and GAP domains, but not the C-terminal SH3 domain.
GRAF and GRAF2 show GAP activity towards RhoA and
Cdc42. GRAF influences Rho-mediated cytoskeletal
rearrangements and binds focal adhesion kinase. GRAF2
regulates caspase-activated p21-activated protein
kinase-2. The SH3 domain of GRAF and GRAF2 binds
PKNbeta, a target of the small GTPase Rho. SH3 domains
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 54
Score = 45.0 bits (107), Expect = 3e-07
Identities = 18/53 (33%), Positives = 29/53 (54%), Gaps = 1/53 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIR-RVDNNWFEGRIGTRRGIFPVTYVE 72
+ARA + A+ ELS G+++T ++ + W EG + R G+ P YVE
Sbjct: 1 RARALYACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLNGRTGLIPENYVE 53
Score = 39.2 bits (92), Expect = 5e-05
Identities = 17/54 (31%), Positives = 25/54 (46%), Gaps = 7/54 (12%)
Query: 101 ALYNYKPQNDDELELREGETVF-VMEKCDDGWYVG--SSQRSGCFGTFPGNYVE 151
ALY K +++ EL G+ + V + GW G + + G P NYVE
Sbjct: 4 ALYACKAEDESELSFEPGQIITNVQPSDEPGWLEGTLNGRT----GLIPENYVE 53
>gnl|CDD|212990 cd12057, SH3_CIN85_3, Third Src Homology 3 domain (SH3C) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1
(SH3KBP1) or CD2-binding protein 3 (CD2BP3) or Ruk, is
an adaptor protein that is involved in the
downregulation of receptor tyrosine kinases by
facilitating endocytosis through interaction with
endophilin-associated ubiquitin ligase Cbl proteins. It
is also important in many other cellular processes
including vesicle-mediated transport, cytoskeletal
remodelling, apoptosis, cell adhesion and migration,
and viral infection, among others. CIN85 exists as
multiple variants from alternative splicing; the main
variant contains three SH3 domains, a proline-rich
region, and a C-terminal coiled-coil domain. All of
these domains enable CIN85 to bind various protein
partners and assemble complexes that have been
implicated in many different functions. This alignment
model represents the third SH3 domain (SH3C) of CIN85.
SH3C has been shown to bind ubiquitin. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 44.9 bits (106), Expect = 4e-07
Identities = 20/54 (37%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRR--VDNNWFEGRIGTRRGIFPVTYVE 72
+ F + AQ EL++ +G++VTLI + +D W+EG + RRG+FP +V+
Sbjct: 1 YCKVLFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEGELNGRRGVFPDNFVK 54
Score = 44.1 bits (104), Expect = 8e-07
Identities = 21/52 (40%), Positives = 34/52 (65%), Gaps = 4/52 (7%)
Query: 102 LYNYKPQNDDELELREGETVFVMEK--CDDGWYVGSSQRSGCFGTFPGNYVE 151
L+ Y+ QN+DEL ++EG+ V ++ K D GW+ G + +G G FP N+V+
Sbjct: 5 LFPYEAQNEDELTIKEGDIVTLISKDCIDAGWWEG--ELNGRRGVFPDNFVK 54
>gnl|CDD|212775 cd11841, SH3_SH3YL1_like, Src homology 3 domain of SH3 domain
containing Ysc84-like 1 (SH3YL1) protein. SH3YL1
localizes to the plasma membrane and is required for
dorsal ruffle formation. It binds phosphoinositides
(PIs) with high affinity through its N-terminal SYLF
domain (also called DUF500). In addition, SH3YL1
contains a C-terminal SH3 domain which has been
reported to bind to N-WASP, dynamin 2, and SHIP2 (a PI
5-phosphatase). SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 45.1 bits (107), Expect = 4e-07
Identities = 20/53 (37%), Positives = 31/53 (58%), Gaps = 2/53 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVD--NNWFEGRIGTRRGIFPVTYV 71
+ A ++F Q +LS G+ +T++ R D +W+EGR+ R GIFP YV
Sbjct: 1 EVTALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEGRLRGRVGIFPANYV 53
Score = 31.6 bits (72), Expect = 0.026
Identities = 17/52 (32%), Positives = 28/52 (53%), Gaps = 4/52 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD--DGWYVGSSQRSGCFGTFPGNYV 150
ALY+++ Q +L + G+ + V+ + D W+ G + G G FP NYV
Sbjct: 4 ALYSFEGQQPCDLSFQAGDRITVLTRTDSQFDWWEG--RLRGRVGIFPANYV 53
>gnl|CDD|212862 cd11929, SH3_SH3RF2_1, First Src Homology 3 domain of SH3 domain
containing ring finger 2. SH3RF2 is also called POSHER
(POSH-eliminating RING protein) or HEPP1 (heart protein
phosphatase 1-binding protein). It acts as an
anti-apoptotic regulator of the JNK pathway by binding
to and promoting the degradation of SH3RF1 (or POSH), a
scaffold protein that is required for pro-apoptotic JNK
activation. It may also play a role in cardiac
functions together with protein phosphatase 1. SH3RF2
contains an N-terminal RING finger domain and three SH3
domains. This model represents the first SH3 domain,
located at the N-terminal half, of SH3RF2. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 44.9 bits (106), Expect = 4e-07
Identities = 19/52 (36%), Positives = 30/52 (57%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A+A N+ +L KG+++ L R++D NW+ G I GIFP + VE
Sbjct: 2 RAKALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLGEINGVSGIFPASSVE 53
Score = 41.5 bits (97), Expect = 7e-06
Identities = 17/51 (33%), Positives = 30/51 (58%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
AL NY+ N +L+ +G+ + + + D+ WY+G + +G G FP + VE
Sbjct: 5 ALCNYRGHNPGDLKFNKGDVILLRRQLDENWYLG--EINGVSGIFPASSVE 53
>gnl|CDD|212751 cd11817, SH3_Eve1_4, Fourth Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3
domain-containing protein 19 (SH3D19) or EEN-binding
protein (EBP), exists in multiple alternatively spliced
isoforms. The longest isoform contains five SH3 domain
in the C-terminal region and seven proline-rich motifs
in the N-terminal region. It is abundantly expressed in
skeletal muscle and heart, and may be involved in
regulating the activity of ADAMs (A disintegrin and
metalloproteases). Eve-1 interacts with EEN, an
endophilin involved in endocytosis and may be the
target of the MLL-EEN fusion protein that is implicated
in leukemogenesis. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 44.8 bits (106), Expect = 5e-07
Identities = 16/49 (32%), Positives = 27/49 (55%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTY 70
A A ++F +T +LS +G+ + + +D W GR+ R GIFP +
Sbjct: 2 AVALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRGRLNGREGIFPRAF 50
Score = 34.4 bits (79), Expect = 0.003
Identities = 14/49 (28%), Positives = 26/49 (53%), Gaps = 2/49 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
ALY++ + +++L + G+ + V E D W G + +G G FP +
Sbjct: 4 ALYDFTGETEEDLSFQRGDRILVTEHLDAEWSRG--RLNGREGIFPRAF 50
>gnl|CDD|212988 cd12055, SH3_CIN85_2, Second Src Homology 3 domain (SH3B) of
Cbl-interacting protein of 85 kDa. CIN85, also called
SH3 domain-containing kinase-binding protein 1 (SH3KBP1)
or CD2-binding protein 3 (CD2BP3) or Ruk, is an adaptor
protein that is involved in the downregulation of
receptor tyrosine kinases by facilitating endocytosis
through interaction with endophilin-associated ubiquitin
ligase Cbl proteins. It is also important in many other
cellular processes including vesicle-mediated transport,
cytoskeletal remodelling, apoptosis, cell adhesion and
migration, and viral infection, among others. CIN85
exists as multiple variants from alternative splicing;
the main variant contains three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CIN85 to bind
various protein partners and assemble complexes that
have been implicated in many different functions. This
alignment model represents the second SH3 domain (SH3B)
of CIN85. SH3B has been shown to bind Cbl proline-rich
peptides and ubiquitin. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 44.6 bits (105), Expect = 5e-07
Identities = 19/51 (37%), Positives = 34/51 (66%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
++Y PQN+DELEL+ G+ + V+ + ++GW+ G +G G FP N+++
Sbjct: 4 VAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGV--LNGKTGMFPSNFIK 52
Score = 38.4 bits (89), Expect = 8e-05
Identities = 13/53 (24%), Positives = 32/53 (60%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+ + F+++ Q EL L G+++ ++ V+ W+EG + + G+FP ++++
Sbjct: 1 RCQVAFSYLPQNEDELELKVGDIIEVVGEVEEGWWEGVLNGKTGMFPSNFIKE 53
>gnl|CDD|212883 cd11950, SH3_GRAP2_C, C-terminal Src homology 3 domain of
GRB2-related adaptor protein 2. GRAP2 is also called
GADS (GRB2-related adapter downstream of Shc), GrpL,
GRB2L, Mona, or GRID (Grb2-related protein with insert
domain). It is expressed specifically in the
hematopoietic system. It plays an important role in T
cell receptor (TCR) signaling by promoting the
formation of the SLP-76:LAT complex, which couples the
TCR to the Ras pathway. It also has roles in
antigen-receptor and tyrosine kinase mediated
signaling. GRAP2 is unique from other GRB2-like adaptor
proteins in that it can be regulated by caspase
cleavage. It contains an N-terminal SH3 domain, a
central SH2 domain, and a C-terminal SH3 domain. The
C-terminal SH3 domain of GRAP2 binds to different
motifs found in substrate peptides including the
typical PxxP motif in hematopoietic progenitor kinase 1
(HPK1), the RxxK motif in SLP-76 and HPK1, and the
RxxxxK motif in phosphatase-like protein HD-PTP. SH3
domains are protein interaction domains that typically
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 44.4 bits (105), Expect = 5e-07
Identities = 16/53 (30%), Positives = 30/53 (56%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
Q RA ++F A EL G+++ ++ + +W++GR+ + G+FP YV
Sbjct: 1 QVRALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKGRLHGKLGLFPANYVAP 53
Score = 39.0 bits (91), Expect = 5e-05
Identities = 18/51 (35%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+++ DDEL G+ + V++ + W+ G + G G FP NYV
Sbjct: 4 ALYDFEALEDDELGFNSGDVIEVLDSSNPSWWKG--RLHGKLGLFPANYVA 52
>gnl|CDD|212749 cd11815, SH3_Eve1_2, Second Src homology 3 domain of ADAM-binding
protein Eve-1. Eve-1, also called SH3 domain-containing
protein 19 (SH3D19) or EEN-binding protein (EBP), exists
in multiple alternatively spliced isoforms. The longest
isoform contains five SH3 domain in the C-terminal
region and seven proline-rich motifs in the N-terminal
region. It is abundantly expressed in skeletal muscle
and heart, and may be involved in regulating the
activity of ADAMs (A disintegrin and metalloproteases).
Eve-1 interacts with EEN, an endophilin involved in
endocytosis and may be the target of the MLL-EEN fusion
protein that is implicated in leukemogenesis. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 44.5 bits (105), Expect = 6e-07
Identities = 20/54 (37%), Positives = 32/54 (59%), Gaps = 4/54 (7%)
Query: 100 HA--LYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
HA L+++ ++ D+L L GE V+++EK D WY G + G FP N+V+
Sbjct: 1 HAVVLHDFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCK--NTTGIFPANHVK 52
Score = 44.1 bits (104), Expect = 7e-07
Identities = 17/46 (36%), Positives = 28/46 (60%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+F A+ +LSL GE+V L+ ++D W+ G+ GIFP +V+
Sbjct: 7 DFPAEHSDDLSLNSGEIVYLLEKIDTEWYRGKCKNTTGIFPANHVK 52
>gnl|CDD|212992 cd12059, SH3_MLK1-3, Src Homology 3 domain of Mixed Lineage Kinases
1, 2, and 3. MLKs 1, 2, and 3 are Serine/Threonine
Kinases (STKs), catalyzing the transfer of the
gamma-phosphoryl group from ATP to S/T residues on
protein substrates. MLKs act as mitogen-activated
protein kinase kinase kinases (MAP3Ks, MKKKs, MAPKKKs),
which phosphorylate and activate MAPK kinases (MAPKKs or
MKKs or MAP2Ks), which in turn phosphorylate and
activate MAPKs during signaling cascades that are
important in mediating cellular responses to
extracellular signals. MLKs play roles in immunity and
inflammation, as well as in cell death, proliferation,
and cell cycle regulation. Little is known about the
specific function of MLK1, also called MAP3K9. It is
capable of activating the c-Jun N-terminal kinase
pathway. Mice lacking both MLK1 and MLK2 are viable,
fertile, and have normal life spans. MLK2, also called
MAP3K10, is abundant in brain, skeletal muscle, and
testis. It functions upstream of the MAPK, c-Jun
N-terminal kinase. It binds hippocalcin, a
calcium-sensor protein that protects neurons against
calcium-induced cell death. Both MLK2 and hippocalcin
may be associated with the pathogenesis of Parkinson's
disease. MLK3, also called MAP3K11, is highly expressed
in breast cancer cells and its signaling through c-Jun
N-terminal kinase has been implicated in the migration,
invasion, and malignancy of cancer cells. It also
functions as a negative regulator of Inhibitor of
Nuclear Factor-KappaB Kinase (IKK) and thus, impacts
inflammation and immunity. MLKs contain an SH3 domain, a
catalytic kinase domain, a leucine zipper, a
proline-rich region, and a CRIB domain that mediates
binding to GTP-bound Cdc42 and Rac. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 44.4 bits (105), Expect = 6e-07
Identities = 21/57 (36%), Positives = 32/57 (56%), Gaps = 7/57 (12%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK-----CDDGWYVGSSQRSGCFGTFPGNYVER 152
A+++Y+ +DEL LR G+ V V+ K D+GW+ G + + G FP NYV
Sbjct: 4 AVFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTG--KINDRVGIFPSNYVTS 58
Score = 36.3 bits (84), Expect = 6e-04
Identities = 19/53 (35%), Positives = 29/53 (54%), Gaps = 5/53 (9%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRV-----DNNWFEGRIGTRRGIFPVTYV 71
A F++ A EL+L +G+ V ++ + D W+ G+I R GIFP YV
Sbjct: 4 AVFDYEASAEDELTLRRGDRVEVLSKDSAVSGDEGWWTGKINDRVGIFPSNYV 56
>gnl|CDD|212909 cd11976, SH3_VAV1_2, C-terminal (or second) Src homology 3 domain
of VAV1 protein. VAV1 is expressed predominantly in
the hematopoietic system and it plays an important role
in the development and activation of B and T cells. It
is activated by tyrosine phosphorylation to function as
a guanine nucleotide exchange factor (GEF) for Rho
GTPases following cell surface receptor activation,
triggering various effects such as cytoskeletal
reorganization, transcription regulation, cell cycle
progression, and calcium mobilization. It also serves
as a scaffold protein and has been shown to interact
with Ku70, Socs1, Janus kinase 2, SIAH2, S100B, Abl
gene, ZAP-70, SLP76, and Syk, among others. VAV
proteins contain several domains that enable their
function: N-terminal calponin homology (CH), acidic,
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
Homology (PH), C1 (zinc finger), SH2, and two SH3
domains. The C-terminal SH3 domain of Vav1 interacts
with a wide variety of proteins including cytoskeletal
regulators (zyxin), RNA-binding proteins (Sam68),
transcriptional regulators, viral proteins, and dynamin
2. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 44.2 bits (104), Expect = 8e-07
Identities = 19/53 (35%), Positives = 34/53 (64%), Gaps = 1/53 (1%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLI-RRVDNNWFEGRIGTRRGIFPVTYVEQ 73
A+A+++F A+ ELSL +G+++ ++ ++ W+ G I R G FP YVE+
Sbjct: 2 AKARYDFCARDRSELSLKEGDIIKILNKKGQQGWWRGEIYGRVGWFPANYVEE 54
Score = 37.2 bits (86), Expect = 3e-04
Identities = 19/52 (36%), Positives = 31/52 (59%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVM-EKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A Y++ ++ EL L+EG+ + ++ +K GW+ G + G G FP NYVE
Sbjct: 4 ARYDFCARDRSELSLKEGDIIKILNKKGQQGWWRG--EIYGRVGWFPANYVE 53
>gnl|CDD|212929 cd11996, SH3_Intersectin2_5, Fifth Src homology 3 domain (or SH3E)
of Intersectin-2. Intersectin-2 (ITSN2) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN2 also functions as a specific GEF for Cdc42
activation in epithelial morphogenesis, and is required
in mitotic spindle orientation. It exists in
alternatively spliced short and long isoforms. The short
isoform contains two Eps15 homology domains (EH1 and
EH2), a coiled-coil region and five SH3 domains
(SH3A-E), while the long isoform, in addition, contains
RhoGEF (also called Dbl-homologous or DH), Pleckstrin
homology (PH) and C2 domains. The fifth SH3 domain (or
SH3E) of ITSN2 is expected to bind protein partners,
similar to ITSN1 which has been shown to bind many
protein partners including SGIP1, Sos1, dynamin1/2,
CIN85, c-Cbl, SHIP2, N-WASP, and synaptojanin-1, among
others. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 43.8 bits (103), Expect = 9e-07
Identities = 20/51 (39%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A+Y+Y N+DEL +G+ + V+ K D W+ G + +G G FP NYV+
Sbjct: 5 AMYDYTANNEDELSFSKGQLINVLNKDDPDWWQG--EINGVTGLFPSNYVK 53
Score = 41.9 bits (98), Expect = 6e-06
Identities = 18/53 (33%), Positives = 31/53 (58%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
Q A +++ A ELS KG+L+ ++ + D +W++G I G+FP YV+
Sbjct: 1 CQVIAMYDYTANNEDELSFSKGQLINVLNKDDPDWWQGEINGVTGLFPSNYVK 53
>gnl|CDD|212806 cd11873, SH3_CD2AP-like_1, First Src Homology 3 domain (SH3A) of
CD2-associated protein and similar proteins. This
subfamily is composed of the first SH3 domain (SH3A) of
CD2AP, CIN85 (Cbl-interacting protein of 85 kDa), and
similar domains. CD2AP and CIN85 are adaptor proteins
that bind to protein partners and assemble complexes
that have been implicated in T cell activation, kidney
function, and apoptosis of neuronal cells. They also
associate with endocytic proteins, actin cytoskeleton
components, and other adaptor proteins involved in
receptor tyrosine kinase (RTK) signaling. CD2AP and the
main isoform of CIN85 contain three SH3 domains, a
proline-rich region, and a C-terminal coiled-coil
domain. All of these domains enable CD2AP and CIN85 to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
SH3A of both proteins bind to an atypical PXXXPR motif
at the C-terminus of Cbl and the cytoplasmic domain of
the cell adhesion protein CD2. CIN85 SH3A binds to
internal proline-rich motifs within the proline-rich
region; this intramolecular interaction serves as a
regulatory mechanism to keep CIN85 in a closed
conformation, preventing the recruitment of other
proteins. CIN85 SH3A has also been shown to bind
ubiquitin. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 43.8 bits (104), Expect = 1e-06
Identities = 15/51 (29%), Positives = 34/51 (66%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+F++ A+ EL+L G+++T +++++ W+EG + +RG+FP +V+
Sbjct: 2 VIVEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEGTLNGKRGMFPDNFVK 52
Score = 41.9 bits (99), Expect = 4e-06
Identities = 16/51 (31%), Positives = 30/51 (58%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
++Y + DEL L+ G+ + ++K ++GW+ G +G G FP N+V+
Sbjct: 4 VEFDYDAEEPDELTLKVGDIITNVKKMEEGWWEG--TLNGKRGMFPDNFVK 52
>gnl|CDD|212938 cd12005, SH3_Lck, Src homology 3 domain of Lck Protein Tyrosine
Kinase. Lck is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
Lck is expressed in T-cells and natural killer cells. It
plays a critical role in T-cell maturation, activation,
and T-cell receptor (TCR) signaling. Lck phosphorylates
ITAM (immunoreceptor tyr activation motif) sequences on
several subunits of TCRs, leading to the activation of
different second messenger cascades. Phosphorylated
ITAMs serve as binding sites for other signaling factor
such as Syk and ZAP-70, leading to their activation and
propagation of downstream events. In addition, Lck
regulates drug-induced apoptosis by interfering with the
mitochondrial death pathway. The apototic role of Lck is
independent of its primary function in T-cell signaling.
Src kinases contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). The SH3
domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 43.7 bits (103), Expect = 1e-06
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY+Y+P +D +L +GE + ++E W+ S +G G P N+V
Sbjct: 4 ALYSYEPSHDGDLGFEKGEKLRILE-QSGEWWKAQSLTTGQEGFIPFNFV 52
>gnl|CDD|212839 cd11906, SH3_BTK, Src Homology 3 domain of Bruton's tyrosine
kinase. BTK is a cytoplasmic (or nonreceptor) tyr
kinase containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. It also contains an N-terminal pleckstrin
homology (PH) domain, which binds the products of PI3K
and allows membrane recruitment and activation, and the
Tec homology (TH) domain with proline-rich and
zinc-binding regions. Btk is expressed in B-cells, and a
variety of myeloid cells including mast cells,
platelets, neutrophils, and dendrictic cells. It
interacts with a variety of partners, from cytosolic
proteins to nuclear transcription factors, suggesting a
diversity of functions. Stimulation of a diverse array
of cell surface receptors, including antigen engagement
of the B-cell receptor (BCR), leads to PH-mediated
membrane translocation of Btk and subsequent
phosphorylation by Src kinase and activation. Btk plays
an important role in the life cycle of B-cells including
their development, differentiation, proliferation,
survival, and apoptosis. Mutations in Btk cause the
primary immunodeficiency disease, X-linked
agammaglobulinaemia (XLA) in humans. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 43.7 bits (103), Expect = 1e-06
Identities = 19/50 (38%), Positives = 31/50 (62%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY+Y P N +L+LR+GE ++E+ + W+ + ++G G P NYV
Sbjct: 5 ALYDYTPMNAQDLQLRKGEEYVILEESNLPWW-RARDKNGREGYIPSNYV 53
Score = 25.9 bits (57), Expect = 3.1
Identities = 13/49 (26%), Positives = 21/49 (42%), Gaps = 1/49 (2%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYV 71
A +++ +L L KGE ++ + W+ R R G P YV
Sbjct: 5 ALYDYTPMNAQDLQLRKGEEYVILEESNLPWWRARDKNGREGYIPSNYV 53
>gnl|CDD|212755 cd11821, SH3_ASAP, Src homology 3 domain of ArfGAP with SH3
domain, ankyrin repeat and PH domain containing
proteins. ASAPs are Arf GTPase activating proteins
(GAPs) and they function in regulating cell growth,
migration, and invasion. They contain an N-terminal BAR
domain, followed by a Pleckstrin homology (PH) domain,
an Arf GAP domain, ankyrin (ANK) repeats, and a
C-terminal SH3 domain. Vertebrates contain at least
three members, ASAP1, ASAP2, and ASAP3, but some ASAP3
proteins do not seem to harbor a C-terminal SH3 domain.
ASAP1 and ASAP2 show GTPase activating protein (GAP)
activity towards Arf1 and Arf5. They do not show GAP
activity towards Arf6, but are able to mediate Arf6
signaling by binding stably to GTP-Arf6. ASAP3 is an
Arf6-specific GAP. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 43.5 bits (103), Expect = 1e-06
Identities = 18/52 (34%), Positives = 31/52 (59%), Gaps = 3/52 (5%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI---GTRRGIFPVTY 70
RA ++ A EL+ +GE++ + D+ W+EG I +RRG+FPV++
Sbjct: 2 VRALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRRGVFPVSF 53
Score = 40.4 bits (95), Expect = 2e-05
Identities = 20/53 (37%), Positives = 27/53 (50%), Gaps = 7/53 (13%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVG----SSQRSGCFGTFPGNY 149
ALY+ + NDDEL EGE + V + DD W+ G R G FP ++
Sbjct: 4 ALYDCQADNDDELTFSEGEIIVVTGEEDDEWWEGHIEGDPSRR---GVFPVSF 53
>gnl|CDD|212882 cd11949, SH3_GRB2_C, C-terminal Src homology 3 domain of Growth
factor receptor-bound protein 2. GRB2 is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which converts
Ras to the active GTP-bound state. It is ubiquitously
expressed in all tissues throughout development and is
important in cell cycle progression, motility,
morphogenesis, and angiogenesis. In lymphocytes, GRB2 is
associated with antigen receptor signaling components.
GRB2 contains an N-terminal SH3 domain, a central SH2
domain, and a C-terminal SH3 domain. The C-terminal SH3
domain of GRB2 binds to Gab2 (Grb2-associated binder 2)
through epitopes containing RxxK motifs, as well as to
the proline-rich C-terminus of FGRF2. SH3 domains are
protein interaction domains that typically bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 43.3 bits (102), Expect = 1e-06
Identities = 21/52 (40%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
AL+++ PQ D EL R G+ + VM+ D W+ G+ G G FP NYV
Sbjct: 4 ALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACH--GQTGMFPRNYVTP 53
Score = 40.2 bits (94), Expect = 2e-05
Identities = 16/51 (31%), Positives = 27/51 (52%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A F+F Q EL +G+ + ++ D NW++G + G+FP YV
Sbjct: 2 VQALFDFDPQEDGELGFRRGDFIEVMDNSDPNWWKGACHGQTGMFPRNYVT 52
>gnl|CDD|212896 cd11963, SH3_STAM2, Src homology 3 domain of Signal Transducing
Adaptor Molecule 2. STAM2, also called EAST (Epidermal
growth factor receptor-associated protein with SH3 and
TAM domain) or Hbp (Hrs binding protein), is part of the
endosomal sorting complex required for transport
(ESCRT-0). It plays a role in sorting mono-ubiquinated
endosomal cargo for trafficking to the lysosome for
degradation. It is also involved in the regulation of
exocytosis. STAMs were discovered as proteins that are
highly phosphorylated following cytokine and growth
factor stimulation. They function in cytokine signaling
and surface receptor degradation, as well as regulate
Golgi morphology. They associate with many proteins
including Jak2 and Jak3 tyrosine kinases, Hrs, AMSH, and
UBPY. STAM adaptor proteins contain VHS (Vps27, Hrs,
STAM homology), ubiquitin interacting (UIM), and SH3
domains. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 43.5 bits (102), Expect = 2e-06
Identities = 18/50 (36%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY+++ D+EL + GE + V++ D W+ G + R G FP N+V
Sbjct: 6 ALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRG--VGLFPSNFV 53
Score = 35.0 bits (80), Expect = 0.002
Identities = 16/51 (31%), Positives = 28/51 (54%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+ RA ++F A EL+ GE++ ++ D NW++G G+FP +V
Sbjct: 3 KVRALYDFEAVEDNELTFKHGEIIIVLDDSDANWWKGENHRGVGLFPSNFV 53
>gnl|CDD|212875 cd11942, SH3_JIP2, Src homology 3 domain of JNK-interacting protein
2. JNK-interacting protein 2 (JIP2) is also called
Mitogen-activated protein kinase 8-interacting protein 2
(MAPK8IP2) or Islet-brain-2 (IB2). It is widely
expressed in the brain, where it forms complexes with
fibroblast growth factor homologous factors (FHFs),
which facilitates activation of the p38delta MAPK. JIP2
is enriched in postsynaptic densities and may play a
role in motor and cognitive function. In addition to a
JNK binding domain, JIP2 also contains SH3 and
Phosphotyrosine-binding (PTB) domains. The SH3 domain of
the related protein JIP1 homodimerizes at the interface
usually involved in proline-rich ligand recognition,
despite the lack of this motif in the domain itself. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 43.0 bits (101), Expect = 2e-06
Identities = 19/51 (37%), Positives = 31/51 (60%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
+ A++ + P+++DELEL + + V + DD WY G + R+G G FP Y
Sbjct: 2 HRAVFRFIPRHEDELELDVDDPLLVEAEEDDYWYRGYNMRTGERGIFPAFY 52
>gnl|CDD|212705 cd11771, SH3_Pex13p_fungal, Src Homology 3 domain of fungal
peroxisomal membrane protein Pex13p. Pex13p, located in
the peroxisomal membrane, contains two transmembrane
regions and a C-terminal SH3 domain. It binds to the
peroxisomal targeting type I (PTS1) receptor Pex5p and
the docking factor Pex14p through its SH3 domain. It is
essential for both PTS1 and PTS2 protein import pathways
into the peroxisomal matrix. Pex13p binds Pex14p, which
contains a PxxP motif, in a classical fashion to the
proline-rich ligand binding site of its SH3 domain. It
binds the WxxxF/Y motif of Pex5p in a novel site that
does not compete with Pex14p binding. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 60
Score = 43.0 bits (102), Expect = 2e-06
Identities = 24/57 (42%), Positives = 34/57 (59%), Gaps = 7/57 (12%)
Query: 101 ALYNYKPQNDD-ELELREGETVFVMEKCD-----DGWYVGSSQRSGCFGTFPGNYVE 151
ALY++ P+N + EL L++G+ V V+ K D W+ G + R G G FP NYVE
Sbjct: 4 ALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGRT-RDGRIGWFPSNYVE 59
Score = 40.0 bits (94), Expect = 3e-05
Identities = 22/60 (36%), Positives = 34/60 (56%), Gaps = 11/60 (18%)
Query: 22 ARAKFNFVAQT-HLELSLVKGELVTLIRRVD-----NNWFEGRIGTRR---GIFPVTYVE 72
RA ++F + +ELSL KG++V ++ + D + W++GR TR G FP YVE
Sbjct: 2 CRALYDFTPENPEMELSLKKGDIVAVLSKTDPLGRDSEWWKGR--TRDGRIGWFPSNYVE 59
>gnl|CDD|212989 cd12056, SH3_CD2AP_3, Third Src Homology 3 domain (SH3C) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the third SH3 domain
(SH3C) of CD2AP. SH3C has been shown to bind ubiquitin.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 42.9 bits (101), Expect = 2e-06
Identities = 20/52 (38%), Positives = 34/52 (65%), Gaps = 4/52 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK--CDDGWYVGSSQRSGCFGTFPGNYV 150
AL++Y+ N+DEL+ +EGE + ++ K + GW+ G + +G G FP N+V
Sbjct: 6 ALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKG--ELNGKEGVFPDNFV 55
Score = 33.6 bits (77), Expect = 0.006
Identities = 14/53 (26%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRV--DNNWFEGRIGTRRGIFPVTYVEQ 73
+A F++ EL +GE++ +I + + W++G + + G+FP +V Q
Sbjct: 5 KALFHYEGTNEDELDFKEGEIILIISKDTGEPGWWKGELNGKEGVFPDNFVSQ 57
>gnl|CDD|212876 cd11943, SH3_JIP1, Src homology 3 domain of JNK-interacting protein
1. JNK-interacting protein 1 (JIP1) is also called
Islet-brain 1 (IB1) or Mitogen-activated protein kinase
8-interacting protein 1 (MAPK8IP1). It is highly
expressed in neurons, where it functions as an adaptor
linking motor to cargo during axonal transport. It also
affects microtubule dynamics in neurons. JIP1 is also
found in pancreatic beta-cells, where it is involved in
regulating insulin secretion. In addition to a JNK
binding domain, JIP1 also contains SH3 and
Phosphotyrosine-binding (PTB) domains. Its SH3 domain
homodimerizes at the interface usually involved in
proline-rich ligand recognition, despite the lack of
this motif in the domain itself. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 42.7 bits (100), Expect = 3e-06
Identities = 17/51 (33%), Positives = 29/51 (56%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
+ A++ + P++ DELEL + + V + +D WY + R+G G FP Y
Sbjct: 2 HRAVFRFVPRHPDELELEVDDPLLVEVQAEDYWYEAYNMRTGARGIFPAYY 52
>gnl|CDD|212984 cd12051, SH3_DOCK1_5_A, Src Homology 3 domain of Class A Dedicator
of Cytokinesis proteins 1 and 5. Dock1, also called
Dock180, and Dock5 are class A DOCKs and are atypical
guanine nucleotide exchange factors (GEFs) that lack the
conventional Dbl homology (DH) domain. Dock1 interacts
with the scaffold protein Elmo and the resulting complex
functions upstream of Rac in many biological events
including phagocytosis of apoptotic cells, cell
migration and invasion. Dock5 functions upstream of Rac1
to regulate osteoclast function. All DOCKs contain two
homology domains: the DHR-1 (Dock homology region-1),
also called CZH1 (CED-5, Dock180, and MBC-zizimin
homology 1), and DHR-2 (also called CZH2 or Docker). The
DHR-1 domain binds
phosphatidylinositol-3,4,5-triphosphate while DHR-2
contains the catalytic activity for Rac and/or Cdc42.
Class A DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus;
they are specific GEFs for Rac. The SH3 domain of Dock1
binds to DHR-2 in an autoinhibitory manner; binding of
Elmo to the SH3 domain of Dock1 exposes the DHR-2 domain
and promotes GEF activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 42.5 bits (100), Expect = 3e-06
Identities = 20/51 (39%), Positives = 32/51 (62%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSS-QRSGCFGTFPGNYV 150
A+YNY + DEL L+ G+TV ++E +GWY G + ++ G FP +Y+
Sbjct: 4 AIYNYDARGPDELSLQIGDTVHILETY-EGWYRGYTLRKKSKKGIFPASYI 53
Score = 30.9 bits (70), Expect = 0.046
Identities = 17/53 (32%), Positives = 30/53 (56%), Gaps = 4/53 (7%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEG---RIGTRRGIFPVTYV 71
A +N+ A+ ELSL G+ V ++ + W+ G R +++GIFP +Y+
Sbjct: 2 GVAIYNYDARGPDELSLQIGDTVHILETYEG-WYRGYTLRKKSKKGIFPASYI 53
>gnl|CDD|212880 cd11947, SH3_GRAP2_N, N-terminal Src homology 3 domain of
GRB2-related adaptor protein 2. GRAP2 is also called
GADS (GRB2-related adapter downstream of Shc), GrpL,
GRB2L, Mona, or GRID (Grb2-related protein with insert
domain). It is expressed specifically in the
hematopoietic system. It plays an important role in T
cell receptor (TCR) signaling by promoting the
formation of the SLP-76:LAT complex, which couples the
TCR to the Ras pathway. It also have roles in
antigen-receptor and tyrosine kinase mediated
signaling. GRAP2 is unique from other GRB2-like adaptor
proteins in that it can be regulated by caspase
cleavage. It contains an N-terminal SH3 domain, a
central SH2 domain, and a C-terminal SH3 domain. The
N-terminal SH3 domain of the related protein GRB2 binds
to Sos and Sos-derived proline-rich peptides. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 42.5 bits (100), Expect = 3e-06
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+AR KF+F A ELS KG+++ ++ D+ WF+ + G P +V+
Sbjct: 1 EARGKFDFTASGEDELSFKKGDVLKILSS-DDIWFKAELNGEEGYVPKNFVD 51
Score = 30.5 bits (69), Expect = 0.057
Identities = 12/52 (23%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
+++ +DEL ++G+ + ++ DD W+ ++ +G G P N+V+
Sbjct: 4 GKFDFTASGEDELSFKKGDVLKILSS-DDIWF--KAELNGEEGYVPKNFVDI 52
>gnl|CDD|212918 cd11985, SH3_Stac2_C, C-terminal Src homology 3 domain of SH3 and
cysteine-rich domain-containing protein 2 (Stac2). Stac
proteins are putative adaptor proteins that contain a
cysteine-rich C1 domain and one or two SH3 domains at
the C-terminus. There are three mammalian members
(Stac1, Stac2, and Stac3) of this family. Stac2 contains
a single SH3 domain at the C-terminus unlike Stac1 and
Stac3, which contain two C-terminal SH3 domains. Stac1
and Stac2 have been found to be expressed differently in
mature dorsal root ganglia (DRG) neurons. Stac1 is
mainly expressed in peptidergic neurons while Stac2 is
found in a subset of nonpeptidergic and all trkB+
neurons. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 42.6 bits (100), Expect = 3e-06
Identities = 20/54 (37%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y ALY + PQ +++L L+ G+ V V++ ++ W+ G S G FP N+V+R
Sbjct: 2 YVALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDR--VGFFPANFVQR 53
Score = 36.8 bits (85), Expect = 4e-04
Identities = 15/50 (30%), Positives = 30/50 (60%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
A + F+ Q + +L L G+ V ++ + +W++G+ G R G FP +V++
Sbjct: 4 ALYKFLPQENNDLPLQPGDRVMVVDDSNEDWWKGKSGDRVGFFPANFVQR 53
>gnl|CDD|212930 cd11997, SH3_PACSIN3, Src homology 3 domain of Protein kinase C and
Casein kinase Substrate in Neurons 3 (PACSIN3). PACSIN
3 or Syndapin III (Synaptic dynamin-associated protein
III) is expressed ubiquitously and regulates glucose
uptake in adipocytes through its role in GLUT1
trafficking. It also modulates the subcellular
localization and stimulus-specific function of the
cation channel TRPV4. PACSINs act as regulators of
cytoskeletal and membrane dynamics. Vetebrates harbor
three isoforms with distinct expression patterns and
specific functions. PACSINs contain an N-terminal F-BAR
domain and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 42.3 bits (99), Expect = 4e-06
Identities = 23/56 (41%), Positives = 30/56 (53%), Gaps = 2/56 (3%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYVE 151
V ALY+Y Q DEL + GE + + + D+ GW G SG G +P NYVE
Sbjct: 2 VRVRALYDYTGQEADELSFKAGEELLKIGEEDEQGWCKGRLL-SGRIGLYPANYVE 56
>gnl|CDD|212861 cd11928, SH3_SH3RF3_1, First Src Homology 3 domain of SH3 domain
containing ring finger 3, an E3 ubiquitin-protein
ligase. SH3RF3 is also called POSH2 (Plenty of SH3s 2)
or SH3MD4 (SH3 multiple domains protein 4). It is a
scaffold protein with E3 ubiquitin-protein ligase
activity. It was identified in the screen for
interacting partners of p21-activated kinase 2 (PAK2).
It may play a role in regulating JNK mediated apoptosis
in certain conditions. It also interacts with
GTP-loaded Rac1. SH3RF3 is highly homologous to SH3RF1;
it also contains an N-terminal RING finger domain and
four SH3 domains. This model represents the first SH3
domain, located at the N-terminal half, of SH3RF3. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 42.2 bits (99), Expect = 4e-06
Identities = 14/50 (28%), Positives = 29/50 (58%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A +++ + +L KG+++ L R+VD NW+ G + G P +Y++
Sbjct: 4 KALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHGELNGCHGFLPASYIQ 53
Score = 40.3 bits (94), Expect = 2e-05
Identities = 16/51 (31%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ + +L+ +G+ + + K D+ WY G + +GC G P +Y++
Sbjct: 5 ALYSYEGKEPGDLKFNKGDIIILRRKVDENWYHG--ELNGCHGFLPASYIQ 53
>gnl|CDD|212816 cd11883, SH3_Sdc25, Src Homology 3 domain of Sdc25/Cdc25 guanine
nucleotide exchange factors. This subfamily is composed
of the Saccharomyces cerevisiae guanine nucleotide
exchange factors (GEFs) Sdc25 and Cdc25, and similar
proteins. These GEFs regulate Ras by stimulating the
GDP/GTP exchange on Ras. Cdc25 is involved in the
Ras/PKA pathway that plays an important role in the
regulation of metabolism, stress responses, and
proliferation, depending on available nutrients and
conditions. Proteins in this subfamily contain an
N-terminal SH3 domain as well as REM (Ras exchanger
motif) and RasGEF domains at the C-terminus. SH3 domains
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 55
Score = 41.9 bits (99), Expect = 5e-06
Identities = 17/52 (32%), Positives = 30/52 (57%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWY---VGSSQRSGCFGTFPGNY 149
ALY++ P++ ++L + G+ ++V+ K GW+ + SS G FP NY
Sbjct: 4 ALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
Score = 30.7 bits (70), Expect = 0.051
Identities = 13/53 (24%), Positives = 28/53 (52%), Gaps = 5/53 (9%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIG-----TRRGIFPVTY 70
A ++F ++ +LS G+++ ++ + + W++G I +RG FP Y
Sbjct: 3 VALYDFTPKSKNQLSFKAGDIIYVLNKDPSGWWDGVIISSSGKVKRGWFPSNY 55
>gnl|CDD|212803 cd11870, SH3_p67phox-like_C, C-terminal Src Homology 3 domain of
the p67phox subunit of NADPH oxidase and similar
proteins. This subfamily is composed of p67phox, NADPH
oxidase activator 1 (Noxa1), and similar proteins.
p67phox, also called Neutrophil cytosol factor 2
(NCF-2), and Noxa1 are homologs and are the cytosolic
subunits of the phagocytic (Nox2) and nonphagocytic
(Nox1) NADPH oxidase complexes, respectively. NADPH
oxidase catalyzes the transfer of electrons from NADPH
to oxygen during phagocytosis forming superoxide and
reactive oxygen species. p67phox and Noxa1 play
regulatory roles. p67phox contains N-terminal TPR,
first SH3 (or N-terminal or central SH3), PB1, and
C-terminal SH3 domains. Noxa1 has a similar domain
architecture except it is lacking the N-terminal SH3
domain. The TPR domain of both binds activated
GTP-bound Rac, while the C-terminal SH3 domain of
p67phox and Noxa1 binds the polyproline motif found at
the C-terminus of p47phox and Noxo1, respectively. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 41.7 bits (98), Expect = 5e-06
Identities = 16/52 (30%), Positives = 25/52 (48%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
Q A + AQ +L +G+ + ++ V+ W EG R GIFP +V
Sbjct: 1 QVVALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSDGRVGIFPKCFVV 52
Score = 41.4 bits (97), Expect = 8e-06
Identities = 18/51 (35%), Positives = 29/51 (56%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
AL+ Y+ Q ++L REG+T+ V+ + ++ W G S G G FP +V
Sbjct: 4 ALHRYEAQGPEDLGFREGDTIDVLSEVNEAWLEGHSD--GRVGIFPKCFVV 52
>gnl|CDD|212741 cd11807, SH3_ASPP, Src homology 3 domain of Apoptosis Stimulating
of p53 proteins (ASPP). The ASPP family of proteins
bind to important regulators of apoptosis (p53, Bcl-2,
and RelA) and cell growth (APCL, PP1). They share
similarity at their C-termini, where they harbor a
proline-rich region, four ankyrin (ANK) repeats, and an
SH3 domain. Vertebrates contain three members of the
family: ASPP1, ASPP2, and iASPP. ASPP1 and ASPP2
activate the apoptotic function of the p53 family of
tumor suppressors (p53, p63, and p73), while iASPP is an
oncoprotein that specifically inhibits p53-induced
apoptosis. The expression of ASPP proteins is altered in
tumors; ASPP1 and ASPP2 are downregulated whereas iASPP
is upregulated is some cancer types. ASPP proteins also
bind and regulate protein phosphatase 1 (PP1), and this
binding is competitive with p53 binding. The SH3 domain
and the ANK repeats of ASPP contribute to the p53
binding site; they bind to the DNA binding domain of
p53. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 42.0 bits (99), Expect = 6e-06
Identities = 21/65 (32%), Positives = 32/65 (49%), Gaps = 12/65 (18%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKCDDG----WYVGSSQRSGCFGTFPGNYVER 152
+AL++Y+ +N DEL REG+ + V+ K DD W+ + + G YV R
Sbjct: 1 GVVYALFDYEAENGDELSFREGDELTVLRKGDDDETEWWWARLNDKEG--------YVPR 52
Query: 153 ASLAL 157
L L
Sbjct: 53 NLLGL 57
Score = 33.1 bits (76), Expect = 0.008
Identities = 15/51 (29%), Positives = 28/51 (54%), Gaps = 3/51 (5%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDN---NWFEGRIGTRRGIFP 67
G A F++ A+ ELS +G+ +T++R+ D+ W+ R+ + G P
Sbjct: 1 GVVYALFDYEAENGDELSFREGDELTVLRKGDDDETEWWWARLNDKEGYVP 51
>gnl|CDD|212746 cd11812, SH3_AHI-1, Src Homology 3 domain of Abelson helper
integration site-1 (AHI-1). AHI-1, also called
Jouberin, is expressed in high levels in the brain,
gonad tissues, and skeletal muscle. It is an adaptor
protein that interacts with the small GTPase Rab8a and
regulates it distribution and function, affecting cilium
formation and vesicle transport. Mutations in the AHI-1
gene can cause Joubert syndrome, a disorder
characterized by brainstem malformations, cerebellar
aplasia/hypoplasia, and retinal dystrophy. AHI-1
variation is also associated with susceptibility to
schizophrenia and type 2 diabetes mellitus progression.
AHI-1 contains WD40 and SH3 domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 41.7 bits (98), Expect = 6e-06
Identities = 21/50 (42%), Positives = 29/50 (58%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY+Y DEL + G+ + V+ K +D W+ GS +G G FP NYV
Sbjct: 4 ALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLV-NGQQGYFPANYV 52
Score = 33.3 bits (76), Expect = 0.007
Identities = 13/49 (26%), Positives = 31/49 (63%), Gaps = 1/49 (2%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYV 71
A +++ A EL++ +G+++ ++ + ++NW+ G + ++G FP YV
Sbjct: 4 ALYDYTANRSDELTIHRGDIIRVLYKDNDNWWFGSLVNGQQGYFPANYV 52
>gnl|CDD|212980 cd12047, SH3_Noxa1_C, C-terminal Src Homology 3 domain of NADPH
oxidase activator 1. Noxa1 is a homolog of p67phox and
is a cytosolic subunit of the nonphagocytic NADPH
oxidase complex Nox1, which catalyzes the transfer of
electrons from NADPH to molecular oxygen to form
superoxide. Noxa1 is co-expressed with Nox1 in colon,
stomach, uterus, prostate, and vascular smooth muscle
cells, consistent with its regulatory role. It does not
interact with p40phox, unlike p67phox, making Nox1
activity independent of p40phox, unlike Nox2. Noxa1
contains TPR, PB1, and C-terminal SH3 domains, but
lacks the central SH3 domain that is present in
p67phox. The TPR domain binds activated GTP-bound Rac.
The C-terminal SH3 domain binds the polyproline motif
found at the C-terminus of Noxo1, a homolog of p47phox.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 41.3 bits (97), Expect = 7e-06
Identities = 14/53 (26%), Positives = 27/53 (50%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+ A+ ++ AQ +L +G+ + ++ V+ W EG R GIFP + +
Sbjct: 1 RMVAQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDGRIGIFPKCFAVR 53
Score = 33.6 bits (77), Expect = 0.006
Identities = 13/52 (25%), Positives = 25/52 (48%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
A ++Y Q ++LE +G+T+ ++ + + W G G FP + R
Sbjct: 4 AQHDYSAQGPEDLEFSQGDTIDILSEVNQEWLEGHCDGR--IGIFPKCFAVR 53
>gnl|CDD|212942 cd12009, SH3_Blk, Src homology 3 domain of Blk Protein Tyrosine
Kinase. Blk is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
It is expressed specifically in B-cells and is involved
in pre-BCR (B-cell receptor) signaling. Src kinases
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 41.3 bits (97), Expect = 7e-06
Identities = 20/55 (36%), Positives = 32/55 (58%), Gaps = 3/55 (5%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDG-WYVGSSQRSGCFGTFPGNYVER 152
A Y++ P N+ +L+L++GE + V+ DG W++ S +G G P NYV R
Sbjct: 2 VIAQYDFVPSNERDLQLKKGEKLQVL--KSDGEWWLAKSLTTGKEGYIPSNYVAR 54
>gnl|CDD|212812 cd11879, SH3_Bem1p_2, Second Src Homology 3 domain of Bud emergence
protein 1 and similar domains. Members of this
subfamily bear similarity to Saccharomyces cerevisiae
Bem1p, containing two Src Homology 3 (SH3) domains at
the N-terminus, a central PX domain, and a C-terminal
PB1 domain. Bem1p is a scaffolding protein that is
critical for proper Cdc42p activation during bud
formation in yeast. During budding and mating, Bem1p
migrates to the plasma membrane where it can serve as an
adaptor for Cdc42p and some other proteins. Bem1p also
functions as an effector of the G1 cyclin Cln3p and the
cyclin-dependent kinase Cdc28p in promoting vacuolar
fusion. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 56
Score = 41.5 bits (98), Expect = 7e-06
Identities = 15/51 (29%), Positives = 27/51 (52%), Gaps = 1/51 (1%)
Query: 102 LYNYKPQNDDELELREGETVFVMEKCDDGWYVGSS-QRSGCFGTFPGNYVE 151
LY++K + DEL+ + G+ + + + W+V R G G P ++VE
Sbjct: 5 LYDFKAERPDELDAKAGDAIIICAHSNYEWFVAKPIGRLGGPGLIPVSFVE 55
Score = 30.4 bits (69), Expect = 0.080
Identities = 15/55 (27%), Positives = 26/55 (47%), Gaps = 5/55 (9%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWF----EGRIGTRRGIFPVTYVE 72
++F A+ EL G+ + + + WF GR+G G+ PV++VE
Sbjct: 2 GIVLYDFKAERPDELDAKAGDAIIICAHSNYEWFVAKPIGRLG-GPGLIPVSFVE 55
>gnl|CDD|212955 cd12022, SH3_p47phox_2, Second or C-terminal Src homology 3 domain
of the p47phox subunit of NADPH oxidase, also called
Neutrophil Cytosolic Factor 1. p47phox, or NCF1, is a
cytosolic subunit of the phagocytic NADPH oxidase
complex (also called Nox2 or gp91phox), which plays a
key role in the ability of phagocytes to defend against
bacterial infections. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p47phox is required for activation of NADH
oxidase and plays a role in translocation. It contains
an N-terminal Phox homology (PX) domain, tandem SH3
domains (N-SH3 and C-SH3), a polybasic/autoinhibitory
region, and a C-terminal proline-rich region (PRR). This
model characterizes the second SH3 domain (or C-SH3) of
p47phox. In its inactive state, the tandem SH3 domains
interact intramolecularly with the autoinhibitory
region; upon activation, the tandem SH3 domains are
exposed through a conformational change, resulting in
their binding to the PRR of p22phox and the activation
of NADPH oxidase. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 41.4 bits (97), Expect = 9e-06
Identities = 19/55 (34%), Positives = 29/55 (52%), Gaps = 2/55 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y + Y +DEL L EGE + V+ K DGW+V ++ G FP Y+++
Sbjct: 1 LYITIKAYTAVEEDELTLLEGEAIEVIHKLLDGWWV--VRKGEVTGYFPSMYLQK 53
Score = 28.3 bits (63), Expect = 0.43
Identities = 13/39 (33%), Positives = 25/39 (64%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
EL+L++GE + +I ++ + W+ R G G FP Y+++
Sbjct: 15 ELTLLEGEAIEVIHKLLDGWWVVRKGEVTGYFPSMYLQK 53
>gnl|CDD|212888 cd11955, SH3_srGAP1-3, Src homology 3 domain of Slit-Robo GTPase
Activating Proteins 1, 2, and 3. srGAP1, also called
Rho GTPase-Activating Protein 13 (ARHGAP13), is a
Cdc42- and RhoA-specific GAP and is expressed later in
the development of central nervous system tissues.
srGAP2 is expressed in zones of neuronal
differentiation. It plays a role in the regeneration of
neurons and axons. srGAP3, also called MEGAP (MEntal
disorder associated GTPase-Activating Protein), is a
Rho GAP with activity towards Rac1 and Cdc42. It
impacts cell migration by regulating actin and
microtubule cytoskeletal dynamics. The association
between srGAP3 haploinsufficiency and mental
retardation is under debate. srGAPs are Rho GAPs that
interact with Robo1, the transmembrane receptor of Slit
proteins. Slit proteins are secreted proteins that
control axon guidance and the migration of neurons and
leukocytes. srGAPs contain an N-terminal F-BAR domain,
a Rho GAP domain, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 41.5 bits (97), Expect = 9e-06
Identities = 19/51 (37%), Positives = 30/51 (58%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+A AKF++V ++ ELS KG + L R ++W+EGR G+ P Y+
Sbjct: 1 EAIAKFDYVGRSARELSFKKGASLLLYHRASDDWWEGRHNGIDGLVPHQYI 51
Score = 24.9 bits (54), Expect = 6.4
Identities = 12/50 (24%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A ++Y ++ EL ++G ++ + + D W+ G + +G G P Y+
Sbjct: 4 AKFDYVGRSARELSFKKGASLLLYHRASDDWWEG--RHNGIDGLVPHQYI 51
>gnl|CDD|212871 cd11938, SH3_ARHGEF16_26, Src homology 3 domain of the Rho guanine
nucleotide exchange factors ARHGEF16 and ARHGEF26.
ARHGEF16, also called ephexin-4, acts as a GEF for RhoG,
activating it by exchanging bound GDP for free GTP. RhoG
is a small GTPase that is a crucial regulator of Rac in
migrating cells. ARHGEF16 interacts directly with the
ephrin receptor EphA2 and mediates cell migration and
invasion in breast cancer cells by activating RhoG.
ARHGEF26, also called SGEF (SH3 domain-containing
guanine exchange factor), also activates RhoG. It is
highly expressed in liver and may play a role in
regulating membrane dynamics. ARHGEF16 and ARHGEF26
contain RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), and SH3 domains. The SH3
domains of ARHGEFs play an autoinhibitory role through
intramolecular interactions with a proline-rich region
N-terminal to the DH domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 41.4 bits (97), Expect = 9e-06
Identities = 17/42 (40%), Positives = 23/42 (54%)
Query: 105 YKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFP 146
Y + DEL L++ + V V++ DGWY G R G G FP
Sbjct: 8 YTAKQPDELSLQQADVVLVLQTESDGWYYGERLRDGERGWFP 49
>gnl|CDD|212712 cd11778, SH3_Bzz1_2, Second Src Homology 3 domain of Bzz1 and
similar domains. Bzz1 (or Bzz1p) is a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Together with other proteins, it induces
membrane scission in yeast. Bzz1 contains an N-terminal
F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a
central coiled-coil, and two C-terminal SH3 domains.
This model represents the second C-terminal SH3 domain.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 40.9 bits (96), Expect = 1e-05
Identities = 21/51 (41%), Positives = 32/51 (62%), Gaps = 5/51 (9%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDD--GWYVGSSQRSGCFGTFPGNY 149
ALY+Y+ Q DDE+ +R G+ + V+ + DD GW G + +G G FP +Y
Sbjct: 4 ALYDYEAQGDDEISIRVGDRIAVI-RGDDGSGWTYG--EINGVKGLFPTSY 51
Score = 34.4 bits (79), Expect = 0.003
Identities = 16/48 (33%), Positives = 28/48 (58%), Gaps = 1/48 (2%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNN-WFEGRIGTRRGIFPVTY 70
A +++ AQ E+S+ G+ + +IR D + W G I +G+FP +Y
Sbjct: 4 ALYDYEAQGDDEISIRVGDRIAVIRGDDGSGWTYGEINGVKGLFPTSY 51
>gnl|CDD|212773 cd11839, SH3_Intersectin_4, Fourth Src homology 3 domain (or SH3D)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The fourth SH3 domain (or SH3D) of
ITSN1 has been shown to bind SHIP2, Numb, CdGAP, and
N-WASP. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 40.8 bits (96), Expect = 1e-05
Identities = 17/50 (34%), Positives = 25/50 (50%), Gaps = 3/50 (6%)
Query: 105 YKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGC---FGTFPGNYVE 151
+ +++L L G+ V V +K GW+ G Q G G FP NYV+
Sbjct: 8 FTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVK 57
Score = 38.1 bits (89), Expect = 1e-04
Identities = 18/50 (36%), Positives = 28/50 (56%), Gaps = 5/50 (10%)
Query: 28 FVAQTHLELSLVKGELVTLIRRVDNNWFEGRI---GTRR--GIFPVTYVE 72
F A +LSL G+LV + ++ + W+EG + G +R G FP YV+
Sbjct: 8 FTATAENQLSLAVGQLVLVRKKSPSGWWEGELQARGKKRQIGWFPANYVK 57
>gnl|CDD|212692 cd11758, SH3_CRK_N, N-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK
(c-CRK) contains a single SH2 domain, followed by
N-terminal and C-terminal SH3 domains. It is involved
in the regulation of many cellular processes including
cell growth, motility, adhesion, and apoptosis. CRK has
been implicated in the malignancy of various human
cancers. The N-terminal SH3 domain of CRK binds a
number of target proteins including DOCK180, C3G, SOS,
and cABL. The CRK family includes two alternatively
spliced protein forms, CRKI and CRKII, that are
expressed by the CRK gene, and the CRK-like (CRKL)
protein, which is expressed by a distinct gene (CRKL).
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 40.8 bits (96), Expect = 2e-05
Identities = 20/53 (37%), Positives = 31/53 (58%), Gaps = 3/53 (5%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGR--IGTRRGIFPVTYVEQ 73
RA F+F +L KGE++T+IR+ + W+ R G + G+ PV YVE+
Sbjct: 4 RALFDFPGNDDEDLPFKKGEILTVIRKPEEQWWNARNSEG-KTGMIPVPYVEK 55
Score = 35.0 bits (81), Expect = 0.002
Identities = 16/53 (30%), Positives = 33/53 (62%), Gaps = 3/53 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRS-GCFGTFPGNYVER 152
AL+++ +D++L ++GE + V+ K ++ W+ +++ S G G P YVE+
Sbjct: 5 ALFDFPGNDDEDLPFKKGEILTVIRKPEEQWW--NARNSEGKTGMIPVPYVEK 55
>gnl|CDD|212736 cd11802, SH3_Endophilin_B, Src homology 3 domain of Endophilin-B.
Endophilins play roles in synaptic vesicle formation,
virus budding, mitochondrial morphology maintenance,
receptor-mediated endocytosis inhibition, and endosomal
sorting. They are classified into two types, A and B.
Vertebrates contain two endophilin-B isoforms.
Endophilin-B proteins are cytoplasmic proteins
expressed mainly in the heart, placenta, and skeletal
muscle. Endophilins contain an N-terminal N-BAR domain
(BAR domain with an additional N-terminal amphipathic
helix), followed by a variable region containing
proline clusters, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 40.3 bits (95), Expect = 2e-05
Identities = 17/52 (32%), Positives = 31/52 (59%), Gaps = 2/52 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIR--RVDNNWFEGRIGTRRGIFPVTY 70
+AR +++ A+ ELSL+ E++T+ +D ++ G G++RG PV Y
Sbjct: 1 KARVLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMGERGSQRGKVPVAY 52
Score = 25.7 bits (57), Expect = 3.2
Identities = 15/51 (29%), Positives = 23/51 (45%), Gaps = 4/51 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVME--KCDDGWYVGSSQRSGCFGTFPGNY 149
LY+Y ++ EL L E + V E D+ + +G +R G P Y
Sbjct: 4 VLYDYDAEDSTELSLLADEVITVYELPGMDEDYMMG--ERGSQRGKVPVAY 52
>gnl|CDD|212759 cd11825, SH3_PLCgamma, Src homology 3 domain of Phospholipase C
(PLC) gamma. PLC catalyzes the hydrolysis of
phosphatidylinositol (4,5)-bisphosphate [PtdIns(4,5)P2]
to produce Ins(1,4,5)P3 and diacylglycerol (DAG) in
response to various receptors. Ins(1,4,5)P3 initiates
the calcium signaling cascade while DAG functions as an
activator of PKC. PLCgamma catalyzes this reaction in
tyrosine kinase-dependent signaling pathways. It is
activated and recruited to its substrate at the
membrane. Vertebrates contain two forms of PLCgamma,
PLCgamma1, which is widely expressed, and PLCgamma2,
which is primarily found in haematopoietic cells.
PLCgamma contains a Pleckstrin homology (PH) domain
followed by an elongation factor (EF) domain, two
catalytic regions of PLC domains that flank two tandem
SH2 domains, followed by a SH3 domain and C2 domain. The
SH3 domain of PLCgamma1 directly interacts with
dynamin-1 and can serve as a guanine nucleotide exchange
factor (GEF). It also interacts with Cbl, inhibiting its
phosphorylation and activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 40.4 bits (95), Expect = 2e-05
Identities = 20/52 (38%), Positives = 28/52 (53%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGS-SQRSGCFGTFPGNYVE 151
ALY+Y+ Q DEL + + +EK D GW+ G + + FP NYVE
Sbjct: 4 ALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRGDYGGKKQKW--FPANYVE 53
Score = 40.0 bits (94), Expect = 2e-05
Identities = 17/53 (32%), Positives = 29/53 (54%), Gaps = 1/53 (1%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRR-GIFPVTYVEQ 73
+A +++ AQ ELS K ++T + + D W+ G G ++ FP YVE+
Sbjct: 2 VKALYDYRAQRPDELSFCKHAIITNVEKEDGGWWRGDYGGKKQKWFPANYVEE 54
>gnl|CDD|212932 cd11999, SH3_PACSIN_like, Src homology 3 domain of an unknown
subfamily of proteins with similarity to Protein kinase
C and Casein kinase Substrate in Neurons (PACSIN)
proteins. PACSINs, also called Synaptic
dynamin-associated proteins (Syndapins), act as
regulators of cytoskeletal and membrane dynamics. They
bind both dynamin and Wiskott-Aldrich syndrome protein
(WASP), and may provide direct links between the actin
cytoskeletal machinery through WASP and
dynamin-dependent endocytosis. Vetebrates harbor three
isoforms with distinct expression patterns and specific
functions. PACSINs contain an N-terminal F-BAR domain
and a C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 40.7 bits (95), Expect = 2e-05
Identities = 21/52 (40%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYVE 151
A+Y+Y Q DEL + GE + +E D+ GW G + G G +P NYVE
Sbjct: 6 AVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGVTD-GGAVGLYPANYVE 56
Score = 30.7 bits (69), Expect = 0.072
Identities = 17/54 (31%), Positives = 26/54 (48%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNN-WFEG-RIGTRRGIFPVTYVE 72
+ RA +++ Q ELS GE + + D W +G G G++P YVE
Sbjct: 3 RVRAVYDYTGQEPDELSFKAGEELLKVEDEDEQGWCKGVTDGGAVGLYPANYVE 56
>gnl|CDD|212822 cd11889, SH3_Cyk3p-like, Src Homology 3 domain of Cytokinesis
protein 3 and similar proteins. Cytokinesis protein 3
(Cyk3 or Cyk3p) is a component of the actomyosin ring
independent cytokinesis pathway in yeast. It interacts
with Inn1 and facilitates its recruitment to the bud
neck, thereby promoting cytokinesis. Cyk3p contains an
N-terminal SH3 domain and a C-terminal
transglutaminase-like domain. The Cyk3p SH3 domain binds
to the C-terminal proline-rich region of Inn1. SH3
domains bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs;
they play a role in the regulation of enzymes by
intramolecular interactions, changing the subcellular
localization of signal pathway components and mediate
multiprotein complex assemblies.
Length = 53
Score = 40.2 bits (94), Expect = 2e-05
Identities = 16/50 (32%), Positives = 29/50 (58%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A+Y++ + + +L EG+ + V+ D W+ G +R+G G FP N+V
Sbjct: 4 AVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
Score = 34.4 bits (79), Expect = 0.003
Identities = 13/52 (25%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRR--GIFPVTYV 71
+A +++ +T +L ++G+L+ ++ D +W+ G++ GIFP +V
Sbjct: 2 VKAVYSWAGETEGDLGFLEGDLIEVLSIGDGSWWSGKLRRNGAEGIFPSNFV 53
>gnl|CDD|212779 cd11845, SH3_Src_like, Src homology 3 domain of Src kinase-like
Protein Tyrosine Kinases. Src subfamily members include
Src, Lck, Hck, Blk, Lyn, Fgr, Fyn, Yrk, Yes, and Brk.
Src (or c-Src) proteins are cytoplasmic (or
non-receptor) PTKs which are anchored to the plasma
membrane. They contain an N-terminal SH4 domain with a
myristoylation site, followed by SH3 and SH2 domains, a
tyr kinase domain, and a regulatory C-terminal region
containing a conserved tyr. They are activated by
autophosphorylation at the tyr kinase domain, but are
negatively regulated by phosphorylation at the
C-terminal tyr by Csk (C-terminal Src Kinase). However,
Brk lacks the N-terminal myristoylation sites. Src
proteins are involved in signaling pathways that
regulate cytokine and growth factor responses,
cytoskeleton dynamics, cell proliferation, survival, and
differentiation. They were identified as the first
proto-oncogene products, and they regulate cell
adhesion, invasion, and motility in cancer cells, and
tumor vasculature, contributing to cancer progression
and metastasis. Src kinases are overexpressed in a
variety of human cancers, making them attractive targets
for therapy. They are also implicated in acute
inflammatory responses and osteoclast function. Src,
Fyn, Yes, and Yrk are widely expressed, while Blk, Lck,
Hck, Fgr, Lyn, and Brk show a limited expression
pattern. This subfamily also includes Drosophila Src42A,
Src oncogene at 42A (also known as Dsrc41) which
accumulates at sites of cell-cell or cell-matrix
adhesion, and participates in Drosphila development and
wound healing. It has been shown to promote tube
elongation in the tracheal system, is essential for
proper cell-cell matching during dorsal closure, and
regulates cell-cell contacts in developing Drosophila
eyes. The SH3 domain of Src kinases contributes to
substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 40.3 bits (95), Expect = 2e-05
Identities = 16/51 (31%), Positives = 30/51 (58%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
Y ALY+Y+ + DD+L ++G+ + +++ D W++ +G G P NY
Sbjct: 2 YVALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLARHLSTGKEGYIPSNY 52
Score = 27.2 bits (61), Expect = 1.1
Identities = 10/36 (27%), Positives = 21/36 (58%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGR 58
A +++ A+T +LS KG+ + ++ D +W+ R
Sbjct: 3 VALYDYEARTDDDLSFKKGDRLQILDDSDGDWWLAR 38
>gnl|CDD|212873 cd11940, SH3_ARHGEF5_19, Src homology 3 domain of the Rho guanine
nucleotide exchange factors ARHGEF5 and ARHGEF19.
ARHGEF5, also called ephexin-3 or TIM (Transforming
immortalized mammary oncogene), is a potent activator of
RhoA and it plays roles in regulating cell shape,
adhesion, and migration. It binds to the SH3 domain of
Src and is involved in regulating Src-induced podosome
formation. ARHGEF19, also called ephexin-2 or WGEF
(weak-similarity GEF), is highly expressed in the
intestine, liver, heart and kidney. It activates RhoA,
Cdc42, and Rac 1, and has been shown to activate RhoA in
the Wnt-PCP (planar cell polarity) pathway. It is
involved in the regulation of cell polarity and
cytoskeletal reorganization. ARHGEF5 and ARHGEF19
contain RhoGEF (also called Dbl-homologous or DH),
Pleckstrin Homology (PH), and SH3 domains. The SH3
domains of ARHGEFs play an autoinhibitory role through
intramolecular interactions with a proline-rich region
N-terminal to the DH domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 40.2 bits (94), Expect = 2e-05
Identities = 18/47 (38%), Positives = 26/47 (55%)
Query: 105 YKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
YK Q +DEL L + + + V ++ DGW G G G FP ++VE
Sbjct: 8 YKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVE 54
Score = 35.5 bits (82), Expect = 0.001
Identities = 16/47 (34%), Positives = 29/47 (61%), Gaps = 2/47 (4%)
Query: 28 FVAQTHLELSLVKGELVTLIRRVDNNWFEG-RIGTR-RGIFPVTYVE 72
+ AQ + EL+L K +++ + ++ + W EG R+ RG FP ++VE
Sbjct: 8 YKAQENDELTLEKADIIMVRQQSSDGWLEGVRLSDGERGWFPQSHVE 54
>gnl|CDD|213015 cd12139, SH3_Bin1, Src Homology 3 domain of Bridging integrator 1
(Bin1), also called Amphiphysin-2. Bin1 isoforms are
localized in many different tissues and may function in
intracellular vesicle trafficking. It plays a role in
the organization and maintenance of the T-tubule network
in skeletal muscle. Mutations in Bin1 are associated
with autosomal recessive centronuclear myopathy. Bin1
contains an N-terminal BAR domain with an additional
N-terminal amphipathic helix (an N-BAR) and a C-terminal
SH3 domain. The SH3 domain of Bin1 forms transient
complexes with actin, myosin filaments, and CDK5, to
facilitate sarcomere organization and myofiber
maturation. It also binds dynamin and prevents its
self-assembly. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 72
Score = 40.7 bits (95), Expect = 2e-05
Identities = 21/65 (32%), Positives = 33/65 (50%), Gaps = 13/65 (20%)
Query: 101 ALYNYKPQNDDELELREGETVFVM-----EKCDDGWYVG--------SSQRSGCFGTFPG 147
A ++Y + DEL+L+ G+ V V+ E+ D+GW +G + C G FP
Sbjct: 7 AQHDYTATDTDELQLKAGDVVLVIPFQNPEEQDEGWLMGVKESDWNQHKKLEKCRGVFPE 66
Query: 148 NYVER 152
N+ ER
Sbjct: 67 NFTER 71
>gnl|CDD|212830 cd11897, SH3_SNX18, Src Homology 3 domain of Sorting nexin 18.
SNX18 is localized to peripheral endosomal structures,
and acts in a trafficking pathway that is
clathrin-independent but relies on AP-1 and PACS1. It
binds FIP5 and is required for apical lumen formation.
It may also play a role in axonal elongation. SNXs are
Phox homology (PX) domain containing proteins that are
involved in regulating membrane traffic and protein
sorting in the endosomal system. SNX18 also contains BAR
and SH3 domains. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 40.0 bits (93), Expect = 2e-05
Identities = 21/55 (38%), Positives = 32/55 (58%), Gaps = 2/55 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYVE 151
ALY+++ +N E+ LRE E + + + D +GW G + R G G FP +YVE
Sbjct: 1 RARALYDFRSENPGEISLREHEVLSLCSEQDIEGWLEGVNSR-GDRGLFPASYVE 54
Score = 36.5 bits (84), Expect = 5e-04
Identities = 21/55 (38%), Positives = 35/55 (63%), Gaps = 4/55 (7%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVD-NNWFEGRIGTR--RGIFPVTYVE 72
+ARA ++F ++ E+SL + E+++L D W EG + +R RG+FP +YVE
Sbjct: 1 RARALYDFRSENPGEISLREHEVLSLCSEQDIEGWLEG-VNSRGDRGLFPASYVE 54
>gnl|CDD|212710 cd11776, SH3_PI3K_p85, Src Homology 3 domain of the p85 regulatory
subunit of Class IA Phosphatidylinositol 3-kinases.
Class I PI3Ks convert PtdIns(4,5)P2 to the critical
second messenger PtdIns(3,4,5)P3. They are heterodimers
and exist in multiple isoforms consisting of one
catalytic subunit (out of four isoforms) and one of
several regulatory subunits. Class IA PI3Ks associate
with the p85 regulatory subunit family, which contains
SH3, RhoGAP, and SH2 domains. The p85 subunits recruit
the PI3K p110 catalytic subunit to the membrane, where
p110 phosphorylates inositol lipids. Vertebrates harbor
two p85 isoforms, called alpha and beta. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 72
Score = 40.6 bits (95), Expect = 3e-05
Identities = 23/70 (32%), Positives = 35/70 (50%), Gaps = 15/70 (21%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFV-------------MEKCDD--GWYVGSSQRSGC 141
V Y ALY+Y+ + D+++ L+ G+ + V E GW G ++R+G
Sbjct: 1 VQYRALYDYEKERDEDIILKTGDVLVVENPELLALGVPDGKETVPKPEGWLEGKNERTGE 60
Query: 142 FGTFPGNYVE 151
G FPG YVE
Sbjct: 61 RGDFPGTYVE 70
>gnl|CDD|212979 cd12046, SH3_p67phox_C, C-terminal (or second) Src Homology 3
domain of the p67phox subunit of NADPH oxidase.
p67phox, also called Neutrophil cytosol factor 2
(NCF-2), is a cytosolic subunit of the phagocytic NADPH
oxidase complex (also called Nox2 or gp91phox) which
plays a crucial role in the cellular response to
bacterial infection. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p67phox plays a regulatory role and contains
N-terminal TPR, first SH3 (or N-terminal or central
SH3), PB1, and C-terminal SH3 domains. It binds, via
its C-terminal SH3 domain, to a proline-rich region of
p47phox and upon activation, this complex assembles
with flavocytochrome b558, the Nox2-p22phox
heterodimer. Concurrently, RacGTP translocates to the
membrane and interacts with the TPR domain of p67phox,
which leads to the activation of NADPH oxidase. The PB1
domain of p67phox binds to its partner PB1 domain in
p40phox, and this facilitates the assembly of
p47phox-p67phox at the membrane. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 39.8 bits (93), Expect = 3e-05
Identities = 17/52 (32%), Positives = 31/52 (59%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
Q A F++ A +L KG+++ ++ +V+ +W EG+ + GIFP +VE
Sbjct: 1 QVVALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCKGKIGIFPSAFVE 52
Score = 38.6 bits (90), Expect = 7e-05
Identities = 16/51 (31%), Positives = 30/51 (58%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
AL++Y+ ++LE ++G+ + V+ K ++ W G + G G FP +VE
Sbjct: 4 ALFSYEASQPEDLEFQKGDVILVLSKVNEDWLEGQCK--GKIGIFPSAFVE 52
>gnl|CDD|212788 cd11854, SH3_Fus1p, Src homology 3 domain of yeast cell fusion
protein Fus1p. Fus1p is required at the cell surface
for cell fusion during the mating response in yeast. It
requires Bch1p and Bud7p, which are Chs5p-Arf1p binding
proteins, for localization to the plasma membrane. It
acts as a scaffold protein to assemble a cell surface
complex which is involved in septum degradation and
inhibition of the NOG pathway to promote cell fusion.
The SH3 domain of Fus1p interacts with Bin1p, a formin
that controls the assembly of actin cables in response
to Cdc42 signaling. It has been shown to bind the motif,
R(S/T)(S/T)SL, instead of PxxP motifs. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 40.0 bits (94), Expect = 3e-05
Identities = 14/33 (42%), Positives = 21/33 (63%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGW 131
+ ++P DDEL ++ GETV V+ + DDGW
Sbjct: 2 MTVISTFEPSLDDELLIKVGETVRVLAEYDDGW 34
Score = 26.9 bits (60), Expect = 1.6
Identities = 10/37 (27%), Positives = 16/37 (43%), Gaps = 4/37 (10%)
Query: 35 ELSLVKGELVTLIRRVDNNWFE----GRIGTRRGIFP 67
EL + GE V ++ D+ W + RG+ P
Sbjct: 15 ELLIKVGETVRVLAEYDDGWCLVERADGLNGDRGMVP 51
>gnl|CDD|212820 cd11887, SH3_Bbc1, Src Homology 3 domain of Bbc1 and similar
domains. This subfamily is composed of Saccharomyces
cerevisiae Bbc1p, also called Mti1p (Myosin tail
region-interacting protein), and similar proteins. Bbc1p
interacts with and regulates type I myosins in yeast,
Myo3p and Myo5p, which are involved in actin
cytoskeletal reorganization. It also binds and inhibits
Las17, a WASp family protein that functions as an
activator of the Arp2/3 complex. Bbc1p contains an
N-terminal SH3 domain. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 60
Score = 40.0 bits (94), Expect = 3e-05
Identities = 20/55 (36%), Positives = 28/55 (50%), Gaps = 3/55 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSG---CFGTFPGNYVER 152
ALY Y+ ++D+L G+ + V E+ D WY G S G FP N+VE
Sbjct: 6 ALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVEV 60
Score = 33.5 bits (77), Expect = 0.006
Identities = 15/55 (27%), Positives = 28/55 (50%), Gaps = 5/55 (9%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGR----IGTRR-GIFPVTYVE 72
+A + + + +L+ G+L+T+ D +W+ G G + GIFP +VE
Sbjct: 5 KALYPYESDHEDDLNFDVGQLITVTEEEDADWYFGEYVDSNGNTKEGIFPKNFVE 59
>gnl|CDD|212889 cd11956, SH3_srGAP4, Src homology 3 domain of Slit-Robo GTPase
Activating Protein 4. srGAP4, also called ARHGAP4, is
highly expressed in hematopoietic cells and may play a
role in lymphocyte differentiation. It is able to
stimulate the GTPase activity of Rac1, Cdc42, and RhoA.
In the nervous system, srGAP4 has been detected in
differentiating neurites and may be involved in axon
and dendritic growth. srGAPs are Rho GAPs that interact
with Robo1, the transmembrane receptor of Slit
proteins. Slit proteins are secreted proteins that
control axon guidance and the migration of neurons and
leukocytes. srGAPs contain an N-terminal F-BAR domain,
a Rho GAP domain, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 39.8 bits (93), Expect = 3e-05
Identities = 16/53 (30%), Positives = 30/53 (56%)
Query: 19 EGQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
E +A A F++ +T ELS +G+++ L + ++W+ G RG+ P Y+
Sbjct: 1 EVEAVACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRGEHNGMRGLIPHKYI 53
Score = 27.9 bits (62), Expect = 0.68
Identities = 12/50 (24%), Positives = 23/50 (46%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A ++Y + EL + G+ + + K W+ G + +G G P Y+
Sbjct: 6 ACFDYTGRTAQELSFKRGDVLLLHSKASSDWWRG--EHNGMRGLIPHKYI 53
>gnl|CDD|212726 cd11792, SH3_Fut8, Src homology 3 domain of
Alpha1,6-fucosyltransferase (Fut8). Fut8 catalyzes the
alpha1,6-linkage of a fucose residue from a donor
substrate to N-linked oligosaccharides on glycoproteins
in a process called core fucosylation, which is crucial
for growth factor receptor-mediated biological
functions. Fut8-deficient mice show severe growth
retardation, early death, and a pulmonary emphysema-like
phenotype. Fut8 is also implicated to play roles in
aging and cancer metastasis. It contains an N-terminal
coiled-coil domain, a catalytic domain, and a C-terminal
SH3 domain. The SH3 domain of Fut8 is located in the
lumen and its role in glycosyl transfer is unclear. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 39.5 bits (93), Expect = 4e-05
Identities = 19/46 (41%), Positives = 30/46 (65%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFP 146
A+Y +KP+N DE+ELR G+ + V DG+ G ++R+G G +P
Sbjct: 4 AIYPHKPRNHDEIELRVGDIIGVAGNHWDGYSKGRNRRTGKTGLYP 49
>gnl|CDD|212709 cd11775, SH3_Sla1p_3, Third Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. The third SH3 domain of Sla1p can bind ubiquitin
while retaining the ability to bind proline-rich
ligands; monoubiquitination of target proteins signals
internalization and sorting through the endocytic
pathway. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 39.6 bits (93), Expect = 4e-05
Identities = 19/54 (35%), Positives = 33/54 (61%), Gaps = 3/54 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVM--EKCDDGWYVGSSQRSGCFGTFPGNYVER 152
LY++ Q+DDEL ++EG+ V+++ +K D W V + +G G P +Y+E
Sbjct: 5 VLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMV-ENVSTGKEGVVPASYIEI 57
Score = 29.2 bits (66), Expect = 0.22
Identities = 13/55 (23%), Positives = 33/55 (60%), Gaps = 3/55 (5%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLI--RRVDNNWFEGRIGT-RRGIFPVTYVE 72
+ + ++F AQ+ EL++ +G++V ++ ++ + W + T + G+ P +Y+E
Sbjct: 2 RGKVLYDFDAQSDDELTVKEGDVVYILDDKKSKDWWMVENVSTGKEGVVPASYIE 56
>gnl|CDD|212703 cd11769, SH3_CSK, Src Homology 3 domain of C-terminal Src kinase.
CSK is a cytoplasmic (or nonreceptor) tyr kinase
containing the Src homology domains, SH3 and SH2,
N-terminal to the catalytic tyr kinase domain. They
negatively regulate the activity of Src kinases that
are anchored to the plasma membrane. To inhibit Src
kinases, CSK is translocated to the membrane via
binding to specific transmembrane proteins, G-proteins,
or adaptor proteins near the membrane. CSK catalyzes
the tyr phosphorylation of the regulatory C-terminal
tail of Src kinases, resulting in their inactivation.
It is expressed in a wide variety of tissues and plays
a role, as a regulator of Src, in cell proliferation,
survival, and differentiation, and consequently, in
cancer development and progression. In addition, CSK
also shows Src-independent functions. It is a critical
component in G-protein signaling, and plays a role in
cytoskeletal reorganization and cell migration. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 39.6 bits (93), Expect = 4e-05
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRV-DNNWFEGRIGT-RRGIFPVTYVEQ 73
AK+NF + +L KG+++T++ D NW++ + R G+ P YV++
Sbjct: 6 AKYNFNGASEEDLPFKKGDILTIVAVTKDPNWYKAKNKDGREGMIPANYVQK 57
Score = 33.0 bits (76), Expect = 0.008
Identities = 14/53 (26%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYVER 152
A YN+ ++++L ++G+ + ++ D WY + + G G P NYV++
Sbjct: 6 AKYNFNGASEEDLPFKKGDILTIVAVTKDPNWYK-AKNKDGREGMIPANYVQK 57
>gnl|CDD|212829 cd11896, SH3_SNX33, Src Homology 3 domain of Sorting Nexin 33.
SNX33 interacts with Wiskott-Aldrich syndrome protein
(WASP) and plays a role in the maintenance of cell shape
and cell cycle progression. It modulates the shedding
and endocytosis of cellular prion protein (PrP(c)) and
amyloid precursor protein (APP). SNXs are Phox homology
(PX) domain containing proteins that are involved in
regulating membrane traffic and protein sorting in the
endosomal system. SNX33 also contains BAR and SH3
domains. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 39.6 bits (92), Expect = 4e-05
Identities = 20/52 (38%), Positives = 32/52 (61%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVM-EKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+++ +N +E+ ++E E + + E DGW G + R G G FP +YVE
Sbjct: 4 ALYSFQSENKEEINIQENEELVIFSENSLDGWLQGQNSR-GETGLFPASYVE 54
Score = 29.9 bits (67), Expect = 0.12
Identities = 16/54 (29%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGE-LVTLIRRVDNNWFEGRIGT-RRGIFPVTYVE 72
+ARA ++F ++ E+++ + E LV + W +G+ G+FP +YVE
Sbjct: 1 KARALYSFQSENKEEINIQENEELVIFSENSLDGWLQGQNSRGETGLFPASYVE 54
>gnl|CDD|212931 cd11998, SH3_PACSIN1-2, Src homology 3 domain of Protein kinase C
and Casein kinase Substrate in Neurons 1 (PACSIN1) and
PACSIN 2. PACSIN 1 or Syndapin I (Synaptic
dynamin-associated protein I) is expressed specifically
in the brain and is localized in neurites and synaptic
boutons. It binds the brain-specific proteins dynamin I,
synaptojanin, synapsin I, and neural Wiskott-Aldrich
syndrome protein (nWASP), and functions as a link
between the cytoskeletal machinery and synaptic vesicle
endocytosis. PACSIN 1 interacts with huntingtin and may
be implicated in the neuropathology of Huntington's
disease. PACSIN 2 or Syndapin II is expressed
ubiquitously and is involved in the regulation of
tubulin polymerization. It associates with Golgi
membranes and forms a complex with dynamin II which is
crucial in promoting vesicle formation from the
trans-Golgi network. PACSINs act as regulators of
cytoskeletal and membrane dynamics. Vetebrates harbor
three isoforms with distinct expression patterns and
specific functions. PACSINs contain an N-terminal F-BAR
domain and a C-terminal SH3 domain. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 39.2 bits (91), Expect = 5e-05
Identities = 23/56 (41%), Positives = 30/56 (53%), Gaps = 2/56 (3%)
Query: 97 VPYHALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYVE 151
V ALY+Y Q DEL + G+ + +E D+ GW G SG G +P NYVE
Sbjct: 1 VRVRALYDYDGQEQDELSFKAGDELTKLEDEDEQGWCKGRLD-SGQVGLYPANYVE 55
>gnl|CDD|212878 cd11945, SH3_Endophilin_B1, Src homology 3 domain of
Endophilin-B1. Endophilin-B1, also called
Bax-interacting factor 1 (Bif-1) or SH3GLB1 (SH3-domain
GRB2-like endophilin B1), is localized mainly to the
Golgi apparatus. It is involved in the regulation of
many biological events including autophagy,
tumorigenesis, nerve growth factor (NGF) trafficking,
neurite outgrowth, mitochondrial outer membrane
dynamics, and cell death. Endophilins play roles in
synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B1 forms homo- and
heterodimers (with endophilin-B2) through its BAR
domain. It interacts with amphiphysin 1 and dynamin 1
through its SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 61
Score = 39.6 bits (92), Expect = 5e-05
Identities = 18/54 (33%), Positives = 34/54 (62%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTL--IRRVDNNWFEGRIGTRRGIFPVTYVE 72
+AR +++ A ELSL+ E++T+ + +D++W G G ++G P+TY+E
Sbjct: 5 KARVLYDYDAANSTELSLLADEVITVYSVPGMDSDWLMGERGNQKGKVPITYLE 58
>gnl|CDD|212792 cd11858, SH3_Myosin-I_fungi, Src homology 3 domain of Type I fungal
Myosins. Type I myosins (myosin-I) are actin-dependent
motors in endocytic actin structures and actin patches.
They play roles in membrane traffic in endocytic and
secretory pathways, cell motility, and mechanosensing.
Saccharomyces cerevisiae has two myosins-I, Myo3 and
Myo5, which are involved in endocytosis and the
polarization of the actin cytoskeleton. Myosin-I
contains an N-terminal actin-activated ATPase, a
phospholipid-binding TH1 (tail homology 1) domain, and a
C-terminal extension which includes an F-actin-binding
TH2 domain, an SH3 domain, and an acidic peptide that
participates in activating the Arp2/3complex. The SH3
domain of myosin-I is required for myosin-I-induced
actin polymerization. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 39.3 bits (92), Expect = 5e-05
Identities = 16/54 (29%), Positives = 30/54 (55%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y ALY++ +EL L++ + V++++K D+GW++ G P Y+E
Sbjct: 2 YKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLEE 55
Score = 35.8 bits (83), Expect = 0.001
Identities = 15/54 (27%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRI--GTRRGIFPVTYVE 72
+A ++F ELSL K ++V ++++ DN W+ + ++ G P Y+E
Sbjct: 1 TYKALYDFAGSVANELSLKKDDIVYIVQKEDNGWWLAKKLDESKEGWVPAAYLE 54
>gnl|CDD|212713 cd11779, SH3_Irsp53_BAIAP2L, Src Homology 3 domain of Insulin
Receptor tyrosine kinase Substrate p53, Brain-specific
Angiogenesis Inhibitor 1-Associated Protein 2
(BAIAP2)-Like proteins, and similar proteins. Proteins
in this family include IRSp53, BAIAP2L1, BAIAP2L2, and
similar proteins. They all contain an
Inverse-Bin/Amphiphysin/Rvs (I-BAR) or IMD domain in
addition to the SH3 domain. IRSp53, also known as
BAIAP2, is a scaffolding protein that takes part in many
signaling pathways including Cdc42-induced filopodia
formation, Rac-mediated lamellipodia extension, and
spine morphogenesis. IRSp53 exists as multiple splicing
variants that differ mainly at the C-termini. BAIAP2L1,
also called IRTKS (Insulin Receptor Tyrosine Kinase
Substrate), serves as a substrate for the insulin
receptor and binds the small GTPase Rac. It plays a role
in regulating the actin cytoskeleton and colocalizes
with F-actin, cortactin, VASP, and vinculin. IRSp53 and
IRTKS also mediate the recruitment of effector proteins
Tir and EspFu, which regulate host cell actin
reorganization, to bacterial attachment sites. BAIAP2L2
co-localizes with clathrin plaques but its function has
not been determined. The SH3 domains of IRSp53 and IRTKS
have been shown to bind the proline-rich C-terminus of
EspFu. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 39.2 bits (92), Expect = 5e-05
Identities = 18/52 (34%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 101 ALYNYKPQNDDELELREGETV-FVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY + + +L EG+ + + + DGW+ G ++RSG G FP Y E
Sbjct: 5 ALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGENERSGRRGWFPIAYTE 56
Score = 29.6 bits (67), Expect = 0.16
Identities = 18/58 (31%), Positives = 28/58 (48%), Gaps = 5/58 (8%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTL-IRRVDNNWFEG---RIGTRRGIFPVTYVEQ 73
+ +A + A +LS +G+++TL + W G R G RRG FP+ Y E
Sbjct: 1 PRVKALYPHAAGGETQLSFEEGDVITLLGPEPRDGWHYGENERSG-RRGWFPIAYTEP 57
>gnl|CDD|212981 cd12048, SH3_DOCK3_B, Src Homology 3 domain of Class B Dedicator of
Cytokinesis 3. Dock3, also called modifier of cell
adhesion (MOCA), and presenilin binding protein (PBP),
is a class B DOCK and is an atypical guanine nucleotide
exchange factor (GEF) that lacks the conventional Dbl
homology (DH) domain. It regulates N-cadherin dependent
cell-cell adhesion, cell polarity, and neuronal
morphology. It promotes axonal growth by stimulating
actin polymerization and microtubule assembly. All DOCKs
contain two homology domains: the DHR-1 (Dock homology
region-1), also called CZH1 (CED-5, Dock180, and
MBC-zizimin homology 1), and DHR-2 (also called CZH2 or
Docker). The DHR-1 domain binds
phosphatidylinositol-3,4,5-triphosphate while DHR-2
contains the catalytic activity for Rac and/or Cdc42.
Class B DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus;
Dock3 is a specific GEFs for Rac. The SH3 domain of
Dock3 binds to DHR-2 in an autoinhibitory manner;
binding of the scaffold protein Elmo to the SH3 domain
of Dock3 exposes the DHR-2 domain and promotes GEF
activity. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 39.1 bits (91), Expect = 6e-05
Identities = 19/39 (48%), Positives = 25/39 (64%), Gaps = 2/39 (5%)
Query: 113 LELREGETVFVMEKCDDGWYVG-SSQRSGCFGTFPGNYV 150
L L GETV ++EKC +GWY G S ++ G FP NY+
Sbjct: 16 LVLELGETVQILEKC-EGWYRGVSIKKPNVKGIFPANYI 53
>gnl|CDD|212819 cd11886, SH3_BOI, Src Homology 3 domain of fungal BOI-like
proteins. This subfamily includes the Saccharomyces
cerevisiae proteins BOI1 and BOI2, and similar proteins.
They contain an N-terminal SH3 domain, a Sterile alpha
motif (SAM), and a Pleckstrin homology (PH) domain at
the C-terminus. BOI1 and BOI2 interact with the SH3
domain of Bem1p, a protein involved in bud formation.
They promote polarized cell growth and participates in
the NoCut signaling pathway, which is involved in the
control of cytokinesis. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 55
Score = 39.2 bits (92), Expect = 6e-05
Identities = 16/54 (29%), Positives = 33/54 (61%), Gaps = 3/54 (5%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCD---DGWYVGSSQRSGCFGTFPGNY 149
++++ +++DEL L+ G+ + ++E + DGWY+G + R+G G FP +
Sbjct: 2 LIVIHDFNARSEDELTLKPGDKIELIEDDEEFGDGWYLGRNLRTGETGLFPVVF 55
>gnl|CDD|212772 cd11838, SH3_Intersectin_3, Third Src homology 3 domain (or SH3C)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The third SH3 domain (or SH3C) of
ITSN1 has been shown to bind many proteins including
dynamin1/2, CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1,
and WNK, among others. The SH3C of ITSN2 has been shown
to bind the K15 protein of Kaposi's sarcoma-associated
herpesvirus. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 38.9 bits (91), Expect = 7e-05
Identities = 14/37 (37%), Positives = 23/37 (62%), Gaps = 1/37 (2%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+L+ G+++ + ++ D W+ G IG R GIFP YV
Sbjct: 15 DLTFNAGDVILVTKK-DGEWWTGTIGDRTGIFPSNYV 50
Score = 33.2 bits (76), Expect = 0.008
Identities = 19/53 (35%), Positives = 27/53 (50%), Gaps = 5/53 (9%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGS-SQRSGCFGTFPGNYV 150
Y ALY Y+ +L G+ + V +K D W+ G+ R+ G FP NYV
Sbjct: 2 YIALYPYESNEPGDLTFNAGDVILVTKK-DGEWWTGTIGDRT---GIFPSNYV 50
>gnl|CDD|212903 cd11970, SH3_PLCgamma1, Src homology 3 domain of Phospholipase C
(PLC) gamma 1. PLCgamma1 is widely expressed and is
essential in growth and development. It is activated by
the TrkA receptor tyrosine kinase and functions as a key
regulator of cell differentiation. It is also the
predominant PLCgamma in T cells and is required for T
cell and NK cell function. PLCs catalyze the hydrolysis
of phosphatidylinositol (4,5)-bisphosphate
[PtdIns(4,5)P2] to produce Ins(1,4,5)P3 and
diacylglycerol (DAG). Ins(1,4,5)P3 initiates the calcium
signaling cascade while DAG functions as an activator of
PKC. PLCgamma contains a Pleckstrin homology (PH) domain
followed by an elongation factor (EF) domain, two
catalytic regions of PLC domains that flank two tandem
SH2 domains, followed by a SH3 domain and C2 domain. The
SH3 domain of PLCgamma1 directly interacts with
dynamin-1 and can serve as a guanine nucleotide exchange
factor (GEF). It also interacts with Cbl, inhibiting its
phosphorylation and activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 60
Score = 39.2 bits (91), Expect = 7e-05
Identities = 20/55 (36%), Positives = 28/55 (50%), Gaps = 9/55 (16%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGT----FPGNYVE 151
AL++YK Q +DEL + + +EK + GW+ R G FP NYVE
Sbjct: 8 ALFDYKAQREDELTFTKNAIIQNVEKQEGGWW-----RGDYGGKKQLWFPSNYVE 57
Score = 35.3 bits (81), Expect = 0.001
Identities = 15/52 (28%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGI-FPVTYVEQ 73
+A F++ AQ EL+ K ++ + + + W+ G G ++ + FP YVE+
Sbjct: 7 KALFDYKAQREDELTFTKNAIIQNVEKQEGGWWRGDYGGKKQLWFPSNYVEE 58
>gnl|CDD|212948 cd12015, SH3_Tks_1, First Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the first SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 38.9 bits (91), Expect = 7e-05
Identities = 19/54 (35%), Positives = 29/54 (53%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y + +YK Q +E+ LR G+ V V+EK ++GW+ S G P Y+E
Sbjct: 2 YVVVADYKKQQPNEISLRAGDVVDVIEKNENGWWFVSL--EDEQGWVPATYLEP 53
Score = 27.0 bits (60), Expect = 1.2
Identities = 14/46 (30%), Positives = 26/46 (56%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
++ Q E+SL G++V +I + +N W+ + +G P TY+E
Sbjct: 7 DYKKQQPNEISLRAGDVVDVIEKNENGWWFVSLEDEQGWVPATYLE 52
>gnl|CDD|212843 cd11910, SH3_PI3K_p85alpha, Src Homology 3 domain of the p85alpha
regulatory subunit of Class IA Phosphatidylinositol
3-kinases. Class I PI3Ks convert PtdIns(4,5)P2 to the
critical second messenger PtdIns(3,4,5)P3. They are
heterodimers and exist in multiple isoforms consisting
of one catalytic subunit (out of four isoforms) and one
of several regulatory subunits. Class IA PI3Ks associate
with the p85 regulatory subunit family, which contains
SH3, RhoGAP, and SH2 domains. The p85 subunits recruit
the PI3K p110 catalytic subunit to the membrane, where
p110 phosphorylates inositol lipids. Vertebrates harbor
two p85 isoforms, called alpha and beta. In addition to
regulating the p110 subunit, p85alpha interacts with
activated FGFR3. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 75
Score = 39.5 bits (92), Expect = 7e-05
Identities = 21/68 (30%), Positives = 34/68 (50%), Gaps = 15/68 (22%)
Query: 99 YHALYNYKPQNDDELELREGETVFV-------------MEKCDD--GWYVGSSQRSGCFG 143
Y ALY+YK + +++++L G+ + V E + GW G ++ +G G
Sbjct: 4 YRALYDYKKEREEDIDLHLGDILTVNKGSLLALGFSEGQEARPEEIGWLNGYNETTGERG 63
Query: 144 TFPGNYVE 151
FPG YVE
Sbjct: 64 DFPGTYVE 71
>gnl|CDD|212838 cd11905, SH3_Tec, Src Homology 3 domain of Tec (Tyrosine kinase
expressed in hepatocellular carcinoma). Tec is a
cytoplasmic (or nonreceptor) tyr kinase containing Src
homology protein interaction domains (SH3, SH2)
N-terminal to the catalytic tyr kinase domain. It also
contains an N-terminal pleckstrin homology (PH) domain,
which binds the products of PI3K and allows membrane
recruitment and activation, and the Tec homology (TH)
domain, which contains proline-rich and zinc-binding
regions. It is more widely-expressed than other Tec
subfamily kinases. Tec is found in endothelial cells,
both B- and T-cells, and a variety of myeloid cells
including mast cells, erythroid cells, platelets,
macrophages and neutrophils. Tec is a key component of
T-cell receptor (TCR) signaling, and is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 38.6 bits (90), Expect = 7e-05
Identities = 17/50 (34%), Positives = 27/50 (54%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A+Y+++P +L L GE ++EK D W+ + + G G P NYV
Sbjct: 5 AMYDFQPTEPHDLRLETGEEYVILEKNDVHWW-KARDKYGKEGYIPSNYV 53
Score = 25.5 bits (56), Expect = 5.1
Identities = 13/49 (26%), Positives = 23/49 (46%), Gaps = 1/49 (2%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYV 71
A ++F +L L GE ++ + D +W++ R + G P YV
Sbjct: 5 AMYDFQPTEPHDLRLETGEEYVILEKNDVHWWKARDKYGKEGYIPSNYV 53
>gnl|CDD|212879 cd11946, SH3_GRB2_N, N-terminal Src homology 3 domain of Growth
factor receptor-bound protein 2. GRB2 is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which converts
Ras to the active GTP-bound state. It is ubiquitously
expressed in all tissues throughout development and is
important in cell cycle progression, motility,
morphogenesis, and angiogenesis. In lymphocytes, GRB2 is
associated with antigen receptor signaling components.
GRB2 contains an N-terminal SH3 domain, a central SH2
domain, and a C-terminal SH3 domain. Its N-terminal SH3
domain binds to Sos and Sos-derived proline-rich
peptides. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 38.9 bits (90), Expect = 7e-05
Identities = 20/52 (38%), Positives = 31/52 (59%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVM-EKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A Y++K DDEL + G+ + V+ E+CD WY ++ +G G P NY+E
Sbjct: 5 AKYDFKATADDELSFKRGDILKVLNEECDQNWY--KAELNGKDGFIPKNYIE 54
Score = 37.7 bits (87), Expect = 2e-04
Identities = 16/55 (29%), Positives = 31/55 (56%), Gaps = 1/55 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIR-RVDNNWFEGRIGTRRGIFPVTYVEQQ 74
+A AK++F A ELS +G+++ ++ D NW++ + + G P Y+E +
Sbjct: 2 EAIAKYDFKATADDELSFKRGDILKVLNEECDQNWYKAELNGKDGFIPKNYIEMK 56
>gnl|CDD|212804 cd11871, SH3_p67phox_N, N-terminal (or first) Src Homology 3 domain
of the p67phox subunit of NADPH oxidase. p67phox, also
called Neutrophil cytosol factor 2 (NCF-2), is a
cytosolic subunit of the phagocytic NADPH oxidase
complex (also called Nox2 or gp91phox) which plays a
crucial role in the cellular response to bacterial
infection. NADPH oxidase catalyzes the transfer of
electrons from NADPH to oxygen during phagocytosis
forming superoxide and reactive oxygen species. p67phox
plays a regulatory role and contains N-terminal TPR,
first SH3 (or N-terminal or central SH3), PB1, and
C-terminal SH3 domains. It binds, via its C-terminal SH3
domain, to a proline-rich region of p47phox and upon
activation, this complex assembles with flavocytochrome
b558, the Nox2-p22phox heterodimer. Concurrently, RacGTP
translocates to the membrane and interacts with the TPR
domain of p67phox, which leads to the activation of
NADPH oxidase. The PB1 domain of p67phox binds to its
partner PB1 domain in p40phox, and this facilitates the
assembly of p47phox-p67phox at the membrane. The
N-terminal SH3 domain increases the affinity of p67phox
for the oxidase complex. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 38.7 bits (90), Expect = 8e-05
Identities = 18/54 (33%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
P+ LY + P+ +EL++ G VFV++K D W + +G G P N++E
Sbjct: 1 PHRVLYEFVPETKEELQVLPGNIVFVLKKGTDNW--ATVVFNGKKGLVPCNFLE 52
Score = 36.8 bits (85), Expect = 4e-04
Identities = 13/50 (26%), Positives = 28/50 (56%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
R + FV +T EL ++ G +V ++++ +NW ++G+ P ++E
Sbjct: 3 RVLYEFVPETKEELQVLPGNIVFVLKKGTDNWATVVFNGKKGLVPCNFLE 52
>gnl|CDD|212881 cd11948, SH3_GRAP_N, N-terminal Src homology 3 domain of
GRB2-related adaptor protein. GRAP is a GRB-2 like
adaptor protein that is highly expressed in lymphoid
tissues. It acts as a negative regulator of T cell
receptor (TCR)-induced lymphocyte proliferation by
downregulating the signaling to the Ras/ERK pathway. It
has been identified as a regulator of TGFbeta signaling
in diabetic kidney tubules and may have a role in the
pathogenesis of the disease. GRAP contains an N-terminal
SH3 domain, a central SH2 domain, and a C-terminal SH3
domain. The N-terminal SH3 domain of the related protein
GRB2 binds to Sos and Sos-derived proline-rich peptides.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 38.3 bits (89), Expect = 1e-04
Identities = 16/52 (30%), Positives = 29/52 (55%), Gaps = 3/52 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYVE 151
ALY+++ DEL ++G+ + ++ DD WY ++ G G P NY++
Sbjct: 4 ALYSFQATESDELPFQKGDILKILNMEDDQNWY--KAELQGREGYIPKNYIK 53
Score = 32.1 bits (73), Expect = 0.021
Identities = 15/53 (28%), Positives = 29/53 (54%), Gaps = 1/53 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDN-NWFEGRIGTRRGIFPVTYVE 72
+A A ++F A EL KG+++ ++ D+ NW++ + R G P Y++
Sbjct: 1 EAVALYSFQATESDELPFQKGDILKILNMEDDQNWYKAELQGREGYIPKNYIK 53
>gnl|CDD|212877 cd11944, SH3_Endophilin_B2, Src homology 3 domain of
Endophilin-B2. Endophilin-B2, also called SH3GLB2
(SH3-domain GRB2-like endophilin B2), is a cytoplasmic
protein that interacts with the apoptosis inducer Bax.
It is overexpressed in prostate cancer metastasis and
has been identified as a cancer antigen with potential
utility in immunotherapy. Endophilins play roles in
synaptic vesicle formation, virus budding,
mitochondrial morphology maintenance, receptor-mediated
endocytosis inhibition, and endosomal sorting. They
contain an N-terminal N-BAR domain (BAR domain with an
additional N-terminal amphipathic helix), followed by a
variable region containing proline clusters, and a
C-terminal SH3 domain. Endophilin-B2 forms homo- and
heterodimers (with endophilin-B1) through its BAR
domain. The related protein endophilin-B1 interacts
with amphiphysin 1 and dynamin 1 through its SH3
domain. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 38.4 bits (89), Expect = 1e-04
Identities = 19/54 (35%), Positives = 33/54 (61%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTL--IRRVDNNWFEGRIGTRRGIFPVTYVE 72
+AR +++ A EL+L+ EL+T+ + +D +W G G ++G PVTY+E
Sbjct: 1 KARVLYDYEAADSSELALLADELITVYSLPGMDPDWLIGERGNQKGKVPVTYLE 54
>gnl|CDD|212738 cd11804, SH3_GRB2_like_N, N-terminal Src homology 3 domain of
Growth factor receptor-bound protein 2 (GRB2) and
related proteins. This family includes the adaptor
protein GRB2 and related proteins including Drosophila
melanogaster Downstream of receptor kinase (DRK),
Caenorhabditis elegans Sex muscle abnormal protein 5
(Sem-5), GRB2-related adaptor protein (GRAP), GRAP2,
and similar proteins. Family members contain an
N-terminal SH3 domain, a central SH2 domain, and a
C-terminal SH3 domain. GRB2/Sem-5/DRK is a critical
signaling molecule that regulates the Ras pathway by
linking tyrosine kinases to the Ras guanine nucleotide
releasing protein Sos (son of sevenless), which
converts Ras to the active GTP-bound state. GRAP2 plays
an important role in T cell receptor (TCR) signaling by
promoting the formation of the SLP-76:LAT complex,
which couples the TCR to the Ras pathway. GRAP acts as
a negative regulator of T cell receptor (TCR)-induced
lymphocyte proliferation by downregulating the
signaling to the Ras/ERK pathway. The N-terminal SH3
domain of GRB2 binds to Sos and Sos-derived
proline-rich peptides. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 52
Score = 38.1 bits (89), Expect = 1e-04
Identities = 16/52 (30%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIR-RVDNNWFEGRIGTRRGIFPVTYV 71
+A AK +F A ELS KG ++ ++ D NW++ + + G+ P Y+
Sbjct: 1 EAVAKHDFKATAEDELSFKKGSILKVLNMEDDPNWYKAELDGKEGLIPKNYI 52
Score = 31.2 bits (71), Expect = 0.040
Identities = 16/51 (31%), Positives = 27/51 (52%), Gaps = 3/51 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDD-GWYVGSSQRSGCFGTFPGNYV 150
A +++K +DEL ++G + V+ DD WY ++ G G P NY+
Sbjct: 4 AKHDFKATAEDELSFKKGSILKVLNMEDDPNWY--KAELDGKEGLIPKNYI 52
>gnl|CDD|212763 cd11829, SH3_GAS7, Src homology 3 domain of Growth Arrest
Specific protein 7. GAS7 is mainly expressed in the
brain and is required for neurite outgrowth. It may
also play a role in the protection and migration of
embryonic stem cells. Treatment-related acute myeloid
leukemia (AML) has been reported resulting from
mixed-lineage leukemia (MLL)-GAS7 translocations as a
complication of primary cancer treatment. GAS7 contains
an N-terminal SH3 domain, followed by a WW domain, and
a central F-BAR domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 52
Score = 37.9 bits (88), Expect = 1e-04
Identities = 18/50 (36%), Positives = 27/50 (54%), Gaps = 1/50 (2%)
Query: 23 RAKFNFVAQTHLE-LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
R + F + H + LS GEL+ +++ D W+EG RG FP +YV
Sbjct: 3 RTLYAFTGEQHQQGLSFEAGELIRVLQAPDGGWWEGEKDGLRGWFPASYV 52
Score = 31.3 bits (71), Expect = 0.030
Identities = 17/51 (33%), Positives = 26/51 (50%), Gaps = 3/51 (5%)
Query: 101 ALYNYKP-QNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
LY + Q+ L GE + V++ D GW+ G ++ G G FP +YV
Sbjct: 4 TLYAFTGEQHQQGLSFEAGELIRVLQAPDGGWWEG--EKDGLRGWFPASYV 52
>gnl|CDD|213007 cd12074, SH3_Tks5_1, First Src homology 3 domain of Tyrosine kinase
substrate with five SH3 domains. Tks5, also called SH3
and PX domain-containing protein 2A (SH3PXD2A) or Five
SH (FISH), is a scaffolding protein and Src substrate
that is localized in podosomes, which are electron-dense
structures found in Src-transformed fibroblasts,
osteoclasts, macrophages, and some invasive cancer
cells. It binds and regulates some members of the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. It is required for podosome formation,
degradation of the extracellular matrix, and cancer cell
invasion. Tks5 contains an N-terminal Phox homology (PX)
domain and five SH3 domains. This model characterizes
the first SH3 domain of Tks5. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 37.8 bits (87), Expect = 2e-04
Identities = 19/53 (35%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y + NY+ Q + E+ L+ GE V V+EK + GW+ S+ G P Y+E
Sbjct: 2 YVVVSNYEKQENSEISLQAGEVVDVIEKNESGWWFVSTAEEQ--GWVPATYLE 52
Score = 31.2 bits (70), Expect = 0.046
Identities = 15/46 (32%), Positives = 26/46 (56%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
N+ Q + E+SL GE+V +I + ++ W+ +G P TY+E
Sbjct: 7 NYEKQENSEISLQAGEVVDVIEKNESGWWFVSTAEEQGWVPATYLE 52
>gnl|CDD|212939 cd12006, SH3_Fyn_Yrk, Src homology 3 domain of Fyn and Yrk Protein
Tyrosine Kinases. Fyn and Yrk (Yes-related kinase) are
members of the Src subfamily of proteins, which are
cytoplasmic (or non-receptor) PTKs. Fyn, together with
Lck, plays a critical role in T-cell signal transduction
by phosphorylating ITAM (immunoreceptor tyr activation
motif) sequences on T-cell receptors, ultimately leading
to the proliferation and differentiation of T-cells. In
addition, Fyn is involved in the myelination of neurons,
and is implicated in Alzheimer's and Parkinson's
diseases. Yrk has been detected only in chickens. It is
primarily found in neuronal and epithelial cells and in
macrophages. It may play a role in inflammation and in
response to injury. Src kinases contain an N-terminal
SH4 domain with a myristoylation site, followed by SH3
and SH2 domains, a tyr kinase domain, and a regulatory
C-terminal region containing a conserved tyr. They are
activated by autophosphorylation at the tyr kinase
domain, but are negatively regulated by phosphorylation
at the C-terminal tyr by Csk (C-terminal Src Kinase).
The SH3 domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 38.1 bits (88), Expect = 2e-04
Identities = 16/52 (30%), Positives = 28/52 (53%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
+ ALY+Y+ + +D+L +GE ++ + W+ S +G G P NYV
Sbjct: 3 FVALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGETGYIPSNYV 54
Score = 26.9 bits (59), Expect = 1.6
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 2/50 (4%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTR--RGIFPVTYV 71
A +++ A+T +LS KGE ++ + +W+E R T G P YV
Sbjct: 5 ALYDYEARTEDDLSFHKGEKFQILNSSEGDWWEARSLTTGETGYIPSNYV 54
>gnl|CDD|212771 cd11837, SH3_Intersectin_2, Second Src homology 3 domain (or SH3B)
of Intersectin. Intersectins (ITSNs) are adaptor
proteins that function in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction.
They are essential for initiating clathrin-coated pit
formation. They bind to many proteins through their
multidomain structure and facilitate the assembly of
multimeric complexes. Vertebrates contain two ITSN
proteins, ITSN1 and ITSN2, which exist in alternatively
spliced short and long isoforms. The short isoforms
contain two Eps15 homology domains (EH1 and EH2), a
coiled-coil region and five SH3 domains (SH3A-E), while
the long isoforms, in addition, contain RhoGEF (also
called Dbl-homologous or DH), Pleckstrin homology (PH)
and C2 domains. ITSN1 and ITSN2 are both widely
expressed, with variations depending on tissue type and
stage of development. The second SH3 domain (or SH3B) of
ITSN1 has been shown to bind WNK and CdGAP. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 37.7 bits (88), Expect = 2e-04
Identities = 15/50 (30%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY ++ + ++ L +G+ + V+E+ + W+ G + G G FP +YV
Sbjct: 4 ALYPWRAKKENHLSFAKGDIITVLEQQEMWWF-GELEG-GEEGWFPKSYV 51
Score = 30.8 bits (70), Expect = 0.051
Identities = 16/51 (31%), Positives = 27/51 (52%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A A + + A+ LS KG+++T++ + + WF G G FP +YV
Sbjct: 1 TATALYPWRAKKENHLSFAKGDIITVLEQQEMWWFGELEGGEEGWFPKSYV 51
>gnl|CDD|212704 cd11770, SH3_Nephrocystin, Src Homology 3 domain of Nephrocystin
(or Nephrocystin-1). Nephrocystin contains an SH3
domain involved in signaling pathways that regulate cell
adhesion and cytoskeletal organization. It is a protein
that in humans is associated with juvenile
nephronophthisis, an inherited kidney disease
characterized by renal fibrosis that lead to chronic
renal failure in children. It is localized in cell-cell
junctions in renal duct cells, and is known to interact
with Ack1, an activated Cdc42-associated kinase. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 37.7 bits (88), Expect = 2e-04
Identities = 14/53 (26%), Positives = 30/53 (56%), Gaps = 1/53 (1%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y AL +++ + + +L ++GE + ++ K DGW++ + G G P Y++
Sbjct: 2 YEALSDFQAEQEGDLSFKKGEVLRIISKRADGWWL-AENSKGNRGLVPKTYLK 53
Score = 31.1 bits (71), Expect = 0.037
Identities = 16/48 (33%), Positives = 28/48 (58%), Gaps = 3/48 (6%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWF--EGRIGTRRGIFPVTYVE 72
+F A+ +LS KGE++ +I + + W+ E G RG+ P TY++
Sbjct: 7 DFQAEQEGDLSFKKGEVLRIISKRADGWWLAENSKG-NRGLVPKTYLK 53
>gnl|CDD|212811 cd11878, SH3_Bem1p_1, First Src Homology 3 domain of Bud
emergence protein 1 and similar domains. Members of
this subfamily bear similarity to Saccharomyces
cerevisiae Bem1p, containing two Src Homology 3 (SH3)
domains at the N-terminus, a central PX domain, and a
C-terminal PB1 domain. Bem1p is a scaffolding protein
that is critical for proper Cdc42p activation during
bud formation in yeast. During budding and mating,
Bem1p migrates to the plasma membrane where it can
serve as an adaptor for Cdc42p and some other proteins.
Bem1p also functions as an effector of the G1 cyclin
Cln3p and the cyclin-dependent kinase Cdc28p in
promoting vacuolar fusion. SH3 domains bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 54
Score = 37.7 bits (88), Expect = 2e-04
Identities = 18/51 (35%), Positives = 28/51 (54%), Gaps = 3/51 (5%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNN-WFEGR--IGTRRGIFPVTY 70
RA +++ AQT ELS KG+ +I D W+E + +RG+ P +Y
Sbjct: 3 RALYDYRAQTPGELSFSKGDFFHVIGEEDQGEWYEATNPVTGKRGLVPKSY 53
Score = 33.0 bits (76), Expect = 0.009
Identities = 16/50 (32%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVM-EKCDDGWYVGSSQRSGCFGTFPGNY 149
ALY+Y+ Q EL +G+ V+ E+ WY ++ +G G P +Y
Sbjct: 4 ALYDYRAQTPGELSFSKGDFFHVIGEEDQGEWYEATNPVTGKRGLVPKSY 53
>gnl|CDD|212840 cd11907, SH3_TXK, Src Homology 3 domain of TXK, also called Resting
lymphocyte kinase (Rlk). TXK is a cytoplasmic (or
nonreceptor) tyr kinase containing Src homology protein
interaction domains (SH3, SH2) N-terminal to the
catalytic tyr kinase domain. It also contains an
N-terminal cysteine-rich region. Rlk is expressed in
T-cells and mast cell lines, and is a key component of
T-cell receptor (TCR) signaling. It is important in
TCR-stimulated proliferation, IL-2 production and
phospholipase C-gamma1 activation. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 37.6 bits (87), Expect = 2e-04
Identities = 17/50 (34%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY++ P+ L L+ E ++E+ D W+ + R G G P NYV
Sbjct: 5 ALYDFLPREPSNLALKRAEEYLILEQYDPHWW-KARDRYGNEGLIPSNYV 53
Score = 25.7 bits (56), Expect = 4.5
Identities = 14/55 (25%), Positives = 29/55 (52%), Gaps = 3/55 (5%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGR--IGTRRGIFPVTYVEQ 73
Q +A ++F+ + L+L + E ++ + D +W++ R G G+ P YV +
Sbjct: 2 QVKALYDFLPREPSNLALKRAEEYLILEQYDPHWWKARDRYGN-EGLIPSNYVTE 55
>gnl|CDD|212957 cd12024, SH3_NoxO1_2, Second or C-terminal Src homology 3 domain of
NADPH oxidase (Nox) Organizing protein 1. Nox
Organizing protein 1 (NoxO1) is a critical regulator of
enzyme kinetics of the nonphagocytic NADPH oxidase Nox1,
which catalyzes the transfer of electrons from NADPH to
molecular oxygen to form superoxide. Nox1 is expressed
in colon, stomach, uterus, prostate, and vascular smooth
muscle cells. NoxO1 is involved in targeting activator
subunits (such as NoxA1) to Nox1. It is co-localized
with Nox1 in the membranes of resting cells and directs
the subcellular localization of Nox1. NoxO1 contains an
N-terminal Phox homology (PX) domain, tandem SH3 domains
(N-SH3 and C-SH3), and a C-terminal proline-rich region
(PRR). This model characterizes the second SH3 domain
(or C-SH3) of NoxO1. The tandem SH3 domains of NoxO1
interact with the PRR of p22phox, which also complexes
with Nox1. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 37.3 bits (87), Expect = 3e-04
Identities = 14/34 (41%), Positives = 22/34 (64%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWY 132
Y+A Y+ Q +DEL + G V V++K D+GW+
Sbjct: 2 YYATRAYEAQKEDELSVPAGVVVEVLQKSDNGWW 35
Score = 33.5 bits (77), Expect = 0.006
Identities = 15/41 (36%), Positives = 22/41 (53%)
Query: 30 AQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTY 70
AQ ELS+ G +V ++++ DN W+ R R G P Y
Sbjct: 10 AQKEDELSVPAGVVVEVLQKSDNGWWLIRYNGRAGYVPSMY 50
>gnl|CDD|212941 cd12008, SH3_Src, Src homology 3 domain of Src Protein Tyrosine
Kinase. Src (or c-Src) is a cytoplasmic (or
non-receptor) PTK and is the vertebrate homolog of the
oncogenic protein (v-Src) from Rous sarcoma virus.
Together with other Src subfamily proteins, it is
involved in signaling pathways that regulate cytokine
and growth factor responses, cytoskeleton dynamics, cell
proliferation, survival, and differentiation. Src also
play a role in regulating cell adhesion, invasion, and
motility in cancer cells, and tumor vasculature,
contributing to cancer progression and metastasis.
Elevated levels of Src kinase activity have been
reported in a variety of human cancers. Several
inhibitors of Src have been developed as anti-cancer
drugs. Src is also implicated in acute inflammatory
responses and osteoclast function. Src kinases contain
an N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 37.4 bits (86), Expect = 3e-04
Identities = 15/50 (30%), Positives = 29/50 (58%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY+Y+ + + +L ++GE + ++ + W++ S +G G P NYV
Sbjct: 4 ALYDYESRTETDLSFKKGERLQIVNNTEGDWWLAHSLTTGQTGYIPSNYV 53
>gnl|CDD|212781 cd11847, SH3_Brk, Src homology 3 domain of Brk (Breast tumor
kinase) Protein Tyrosine Kinase (PTK), also called PTK6.
Brk is a cytoplasmic (or non-receptor) PTK with limited
homology to Src kinases. It has been found to be
overexpressed in a majority of breast tumors. It plays
roles in normal cell differentiation, proliferation,
survival, migration, and cell cycle progression. Brk
substrates include RNA-binding proteins (SLM-1/2,
Sam68), transcription factors (STAT3/5), and signaling
molecules (Akt, paxillin, IRS-4). Src kinases in general
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr; they are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). However, Brk lacks the
N-terminal myristoylation site. The SH3 domain of Src
kinases contributes to substrate recruitment by binding
adaptor proteins/substrates, and regulation of kinase
activity through an intramolecular interaction. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 37.2 bits (86), Expect = 3e-04
Identities = 18/57 (31%), Positives = 29/57 (50%), Gaps = 3/57 (5%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCF---GTFPGNYVER 152
Y AL+++K + D+EL + G+ + E+ D W R+G G P NY+ R
Sbjct: 2 YKALWDFKARGDEELSFQAGDQFRIAERSGDWWTALKLDRAGGVVAQGFVPNNYLAR 58
>gnl|CDD|212701 cd11767, SH3_Nck_3, Third Src Homology 3 domain of Nck adaptor
proteins. This group contains the third SH3 domain of
Nck, the first SH3 domain of Caenorhabditis elegans
Ced-2 (Cell death abnormality protein 2), and similar
domains. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4), which show partly
overlapping functions but also bind distinct targets.
Their SH3 domains are involved in recruiting downstream
effector molecules, such as the N-WASP/Arp2/3 complex,
which when activated induces actin polymerization that
results in the production of pedestals, or protrusions
of the plasma membrane. The third SH3 domain of Nck
appears to prefer ligands with a PxAPxR motif. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. Ced-2 is a
cell corpse engulfment protein that interacts with Ced-5
in a pathway that regulates the activation of Ced-10, a
Rac small GTPase.
Length = 56
Score = 36.9 bits (86), Expect = 3e-04
Identities = 20/54 (37%), Positives = 29/54 (53%), Gaps = 3/54 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK--CDDGWYVGSSQRSGCFGTFPGNYVER 152
ALY + +ND+EL +GE + ++EK D W+ + G G P NYVE
Sbjct: 4 ALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNAL-GTTGLVPRNYVEV 56
Score = 30.7 bits (70), Expect = 0.057
Identities = 18/55 (32%), Positives = 30/55 (54%), Gaps = 5/55 (9%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNN--WFEGR--IGTRRGIFPVTYVE 72
A + F + ELS KGE + +I + +++ W++ R +GT G+ P YVE
Sbjct: 2 VVALYPFTGENDEELSFEKGERLEIIEKPEDDPDWWKARNALGT-TGLVPRNYVE 55
>gnl|CDD|212925 cd11992, SH3_Intersectin2_3, Third Src homology 3 domain (or
SH3C) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The third SH3 domain (SH3C) of ITSN2 has been
shown to bind the K15 protein of Kaposi's
sarcoma-associated herpesvirus. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 52
Score = 36.9 bits (85), Expect = 4e-04
Identities = 15/38 (39%), Positives = 22/38 (57%), Gaps = 1/38 (2%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+L+ +GE + L+ + D W+ G I R GIFP YV
Sbjct: 15 DLTFNEGEEI-LVTQKDGEWWTGSIEDRTGIFPSNYVR 51
Score = 34.6 bits (79), Expect = 0.002
Identities = 22/54 (40%), Positives = 27/54 (50%), Gaps = 5/54 (9%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGS-SQRSGCFGTFPGNYVE 151
Y ALY Y +L EGE + V +K D W+ GS R+ G FP NYV
Sbjct: 2 YIALYPYSSSEPGDLTFNEGEEILVTQK-DGEWWTGSIEDRT---GIFPSNYVR 51
>gnl|CDD|212844 cd11911, SH3_CIP4-like, Src Homology 3 domain of Cdc42-Interacting
Protein 4. This subfamily is composed of
Cdc42-Interacting Protein 4 (CIP4), Formin Binding
Protein 17 (FBP17), FormiN Binding Protein 1-Like
(FNBP1L), and similar proteins. CIP4 and FNBP1L are
Cdc42 effectors that bind Wiskott-Aldrich syndrome
protein (WASP) and function in endocytosis. CIP4 and
FBP17 bind to the Fas ligand and may be implicated in
the inflammatory response. CIP4 may also play a role in
phagocytosis. It functions downstream of Cdc42 in
PDGF-dependent actin reorganization and cell migration,
and also regulates the activity of PDGFRbeta. It uses
Src as a substrate in regulating the invasiveness of
breast tumor cells. CIP4 may also play a role in the
pathogenesis of Huntington's disease. Members of this
subfamily typically contain an N-terminal F-BAR
(FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a
central Cdc42-binding HR1 domain, and a C-terminal SH3
domain. The SH3 domain of CIP4 associates with Gapex-5,
a Rab31 GEF. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 36.9 bits (86), Expect = 4e-04
Identities = 12/32 (37%), Positives = 20/32 (62%), Gaps = 1/32 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD-DGW 131
ALY++ ++ L + EGE + V+E+ DGW
Sbjct: 4 ALYDFDGTSEGTLSMEEGEILLVLEEDGGDGW 35
Score = 25.7 bits (57), Expect = 3.4
Identities = 13/55 (23%), Positives = 24/55 (43%), Gaps = 4/55 (7%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNN--WFEGRIGTRR-GIFPVTYVE 72
A ++F + LS+ +GE++ ++ D W R G P +Y+E
Sbjct: 1 TCTALYDFDGTSEGTLSMEEGEILLVLEE-DGGDGWTRVRKNNGDEGYVPTSYIE 54
>gnl|CDD|212897 cd11964, SH3_STAM1, Src homology 3 domain of Signal Transducing
Adaptor Molecule 1. STAM1 is part of the endosomal
sorting complex required for transport (ESCRT-0) and is
involved in sorting ubiquitinated cargo proteins from
the endosome. It may also be involved in the regulation
of IL2 and GM-CSF mediated signaling, and has been
implicated in neural cell survival. STAMs were
discovered as proteins that are highly phosphorylated
following cytokine and growth factor stimulation. They
function in cytokine signaling and surface receptor
degradation, as well as regulate Golgi morphology. They
associate with many proteins including Jak2 and Jak3
tyrosine kinases, Hrs, AMSH, and UBPY. STAM adaptor
proteins contain VHS (Vps27, Hrs, STAM homology),
ubiquitin interacting (UIM), and SH3 domains. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 36.9 bits (85), Expect = 4e-04
Identities = 14/50 (28%), Positives = 29/50 (58%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A+Y+++ D+EL + G+ + +++ D W+ G + + G FP N+V
Sbjct: 5 AIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQG--TGLFPSNFV 52
Score = 35.7 bits (82), Expect = 0.001
Identities = 16/51 (31%), Positives = 29/51 (56%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+ RA ++F A EL+ G+++T++ D NW++G G+FP +V
Sbjct: 2 KVRAIYDFEAAEDNELTFKAGDIITILDDSDPNWWKGETPQGTGLFPSNFV 52
>gnl|CDD|212744 cd11810, SH3_RUSC1_like, Src homology 3 domain of RUN and SH3
domain-containing proteins 1 and 2. RUSC1 and RUSC2,
that were originally characterized in silico. They are
adaptor proteins consisting of RUN, leucine zipper, and
SH3 domains. RUSC1, also called NESCA (New molecule
containing SH3 at the carboxy-terminus), is highly
expressed in the brain and is translocated to the
nuclear membrane from the cytoplasm upon stimulation
with neurotrophin. It plays a role in facilitating
neurotrophin-dependent neurite outgrowth. It also
interacts with NEMO (or IKKgamma) and may function in
NEMO-mediated activation of NF-kB. RUSC2, also called
Iporin, is expressed ubiquitously with highest amounts
in the brain and testis. It interacts with the small
GTPase Rab1 and the Golgi matrix protein GM130, and may
function in linking GTPases to certain intracellular
signaling pathways. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 36.3 bits (84), Expect = 5e-04
Identities = 17/48 (35%), Positives = 30/48 (62%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTY 70
RA + VA +LS KG+++ +I RVD++W G+ +G+ P++Y
Sbjct: 3 RALCHHVATDSGQLSFRKGDILRVIARVDDDWLLCTRGSTKGLVPLSY 50
Score = 28.9 bits (65), Expect = 0.20
Identities = 9/31 (29%), Positives = 18/31 (58%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGW 131
AL ++ + +L R+G+ + V+ + DD W
Sbjct: 4 ALCHHVATDSGQLSFRKGDILRVIARVDDDW 34
>gnl|CDD|212734 cd11800, SH3_DNMBP_C2_like, Second C-terminal Src homology 3 domain
of Dynamin Binding Protein, also called Tuba, and
similar domains. DNMBP or Tuba is a cdc42-specific
guanine nucleotide exchange factor (GEF) that contains
four N-terminal SH3 domains, a central RhoGEF [or Dbl
homology (DH)] domain followed by a Bin/Amphiphysin/Rvs
(BAR) domain, and two C-terminal SH3 domains. It
provides a functional link between dynamin, Rho GTPase
signaling, and actin dynamics. It plays an important
role in regulating cell junction configuration. The
C-terminal SH3 domains of DNMBP bind to N-WASP and
Ena/VASP proteins, which are key regulatory proteins of
the actin cytoskeleton. Also included in this subfamily
is the second C-terminal SH3 domain of Rho guanine
nucleotide exchange factor 37 (ARHGEF37), whose function
is still unknown. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 36.6 bits (85), Expect = 5e-04
Identities = 20/60 (33%), Positives = 32/60 (53%), Gaps = 8/60 (13%)
Query: 98 PYHALYNYKPQNDDELELREGETVFVMEKCD-----DGWYVGSSQRSGCFGTFPGNYVER 152
Y+ALY ++ ++ EL + EG+ V V+EK D + W V + G G P NY+ +
Sbjct: 1 YYYALYTFEARSPGELSVTEGQVVTVLEKHDLKGNPEWWLV---EDRGKQGYVPSNYLAK 57
Score = 27.0 bits (60), Expect = 1.3
Identities = 10/28 (35%), Positives = 20/28 (71%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVD 51
A + F A++ ELS+ +G++VT++ + D
Sbjct: 4 ALYTFEARSPGELSVTEGQVVTVLEKHD 31
>gnl|CDD|212949 cd12016, SH3_Tks_2, Second Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the second SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 36.3 bits (84), Expect = 5e-04
Identities = 18/54 (33%), Positives = 27/54 (50%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y YK +N+DE+ G V V++K DGW+ Q G G P Y+++
Sbjct: 3 YITTQAYKAENEDEIGFETGVVVEVIQKNLDGWWKIRYQ--GKEGWAPATYLKK 54
>gnl|CDD|212708 cd11774, SH3_Sla1p_2, Second Src Homology 3 domain of the fungal
endocytic adaptor protein Sla1p. Sla1p facilitates
endocytosis by playing a role as an adaptor protein in
coupling components of the actin cytoskeleton to the
endocytic machinery. It interacts with Abp1p, Las17p and
Pan1p, which are activator proteins of actin-related
protein 2/3 (Arp2/3). Sla1p contains multiple domains
including three SH3 domains, a SAM (sterile alpha motif)
domain, and a Sla1 homology domain 1 (SHD1), which binds
to the NPFXD motif that is found in many integral
membrane proteins such as the Golgi-localized
Arf-binding protein Lsb5p and the P4-ATPases, Drs2p and
Dnf1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 36.3 bits (84), Expect = 6e-04
Identities = 20/51 (39%), Positives = 28/51 (54%), Gaps = 3/51 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGW-YVGSSQRSGCFGTFPGNYV 150
ALY+Y Q ++EL EG+T+ V + D W VG + FG P NY+
Sbjct: 4 ALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQ--FGFVPANYI 52
Score = 27.8 bits (62), Expect = 0.53
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 1/52 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNW-FEGRIGTRRGIFPVTYV 71
QA+A +++ QT ELS +G+ + + D++W G GT+ G P Y+
Sbjct: 1 QAKALYDYDKQTEEELSFNEGDTLDVYDDSDSDWILVGFNGTQFGFVPANYI 52
>gnl|CDD|212940 cd12007, SH3_Yes, Src homology 3 domain of Yes Protein Tyrosine
Kinase. Yes (or c-Yes) is a member of the Src subfamily
of proteins, which are cytoplasmic (or non-receptor)
PTKs. c-Yes kinase is the cellular homolog of the
oncogenic protein (v-Yes) encoded by the Yamaguchi 73
and Esh sarcoma viruses. It displays functional overlap
with other Src subfamily members, particularly Src. It
also shows some unique functions such as binding to
occludins, transmembrane proteins that regulate
extracellular interactions in tight junctions. Yes also
associates with a number of proteins in different cell
types that Src does not interact with, like JAK2 and
gp130 in pre-adipocytes, and Pyk2 in treated pulmonary
vein endothelial cells. Although the biological function
of Yes remains unclear, it appears to have a role in
regulating cell-cell interactions and vesicle
trafficking in polarized cells. Src kinases contain an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 58
Score = 36.2 bits (83), Expect = 6e-04
Identities = 16/53 (30%), Positives = 28/53 (52%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVERA 153
ALY+Y+ + ++L ++GE ++ + W+ S +G G P NYV A
Sbjct: 5 ALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYVAPA 57
Score = 30.0 bits (67), Expect = 0.14
Identities = 18/50 (36%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGR-IGT-RRGIFPVTYV 71
A +++ A+T +LS KGE +I + +W+E R I T + G P YV
Sbjct: 5 ALYDYEARTTEDLSFKKGERFQIINNTEGDWWEARSIATGKNGYIPSNYV 54
>gnl|CDD|212828 cd11895, SH3_FCHSD1_2, Second Src Homology 3 domain of FCH and
double SH3 domains protein 1. FCHSD1 has a domain
structure consisting of an N-terminal F-BAR (FES-CIP4
Homology and Bin/Amphiphysin/Rvs), two SH3, and
C-terminal proline-rich domains. It has only been
characterized in silico and its function is unknown.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 58
Score = 36.1 bits (83), Expect = 7e-04
Identities = 21/56 (37%), Positives = 33/56 (58%), Gaps = 4/56 (7%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRR----VDNNWFEGRIGTRRGIFPVTYVEQ 73
ARA +++ Q+ ELS +G L+ L+ R VD+ ++ G G R G+FP VE+
Sbjct: 2 ARALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRGEFGGRVGVFPSLLVEE 57
Score = 31.1 bits (70), Expect = 0.056
Identities = 19/55 (34%), Positives = 29/55 (52%), Gaps = 6/55 (10%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKC----DDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y Q+ +EL EG + ++ + DDG++ G + G G FP VE
Sbjct: 4 ALYSYTGQSPEELSFPEGALIRLLPRAQDGVDDGFWRG--EFGGRVGVFPSLLVE 56
>gnl|CDD|212902 cd11969, SH3_PLCgamma2, Src homology 3 domain of Phospholipase C
(PLC) gamma 2. PLCgamma2 is primarily expressed in
haematopoietic cells, specifically in B cells. It is
activated by tyrosine phosphorylation by B cell receptor
(BCR) kinases and is recruited to the plasma membrane
where its substrate is located. It is required in
pre-BCR signaling and in the maturation of B cells. PLCs
catalyze the hydrolysis of phosphatidylinositol
(4,5)-bisphosphate [PtdIns(4,5)P2] to produce
Ins(1,4,5)P3 and diacylglycerol (DAG). Ins(1,4,5)P3
initiates the calcium signaling cascade while DAG
functions as an activator of PKC. PLCgamma contains a
Pleckstrin homology (PH) domain followed by an
elongation factor (EF) domain, two catalytic regions of
PLC domains that flank two tandem SH2 domains, followed
by a SH3 domain and C2 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 36.0 bits (83), Expect = 7e-04
Identities = 19/56 (33%), Positives = 27/56 (48%), Gaps = 11/56 (19%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGT-----FPGNYVE 151
ALY+Y+ + DEL +G + + K GW+ G +G FP NYVE
Sbjct: 4 ALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGD------YGGKVQHYFPSNYVE 53
Score = 34.4 bits (79), Expect = 0.003
Identities = 16/52 (30%), Positives = 28/52 (53%), Gaps = 1/52 (1%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTR-RGIFPVTYVEQ 73
+A +++ A+ ELS KG L+ + + W++G G + + FP YVE
Sbjct: 3 KALYDYRAKRSDELSFCKGALIHNVSKETGGWWKGDYGGKVQHYFPSNYVED 54
>gnl|CDD|212827 cd11894, SH3_FCHSD2_2, Second Src Homology 3 domain of FCH and
double SH3 domains protein 2. FCHSD2 has a domain
structure consisting of an N-terminal F-BAR (FES-CIP4
Homology and Bin/Amphiphysin/Rvs), two SH3, and
C-terminal proline-rich domains. It has only been
characterized in silico and its function is unknown. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 36.1 bits (83), Expect = 7e-04
Identities = 22/54 (40%), Positives = 31/54 (57%), Gaps = 5/54 (9%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK---CDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+Y+ Q DDEL EG + ++ K DDG++ G + +G G FP VE
Sbjct: 4 ALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEG--EFNGRIGVFPSVLVE 55
Score = 34.1 bits (78), Expect = 0.004
Identities = 16/54 (29%), Positives = 31/54 (57%), Gaps = 3/54 (5%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRR---VDNNWFEGRIGTRRGIFPVTYVEQ 73
+A +++ QT ELS +G ++ ++ + D+ ++EG R G+FP VE+
Sbjct: 3 KALYDYEGQTDDELSFPEGAIIRILNKENQDDDGFWEGEFNGRIGVFPSVLVEE 56
>gnl|CDD|212842 cd11909, SH3_PI3K_p85beta, Src Homology 3 domain of the p85beta
regulatory subunit of Class IA Phosphatidylinositol
3-kinases. Class I PI3Ks convert PtdIns(4,5)P2 to the
critical second messenger PtdIns(3,4,5)P3. They are
heterodimers and exist in multiple isoforms consisting
of one catalytic subunit (out of four isoforms) and one
of several regulatory subunits. Class IA PI3Ks associate
with the p85 regulatory subunit family, which contains
SH3, RhoGAP, and SH2 domains. The p85 subunits recruit
the PI3K p110 catalytic subunit to the membrane, where
p110 phosphorylates inositol lipids. Vertebrates harbor
two p85 isoforms, called alpha and beta. In addition to
regulating the p110 subunit, p85beta binds CD28 and may
be involved in the activation and differentiation of
antigen-stimulated T cells. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 74
Score = 36.3 bits (84), Expect = 8e-04
Identities = 21/68 (30%), Positives = 35/68 (51%), Gaps = 15/68 (22%)
Query: 99 YHALYNYKPQNDDELELREGETVFVM-------------EKCDD--GWYVGSSQRSGCFG 143
Y ALY Y+ + +++++L G+ + V E+C GW +G ++R+ G
Sbjct: 3 YRALYPYRKEREEDIDLLPGDVLTVSRAALQALGVKEGGEQCPQSIGWILGLNERTKQRG 62
Query: 144 TFPGNYVE 151
FPG YVE
Sbjct: 63 DFPGTYVE 70
>gnl|CDD|212762 cd11828, SH3_ARHGEF9_like, Src homology 3 domain of ARHGEF9-like
Rho guanine nucleotide exchange factors. Members of
this family contain a SH3 domain followed by RhoGEF
(also called Dbl-homologous or DH) and Pleckstrin
Homology (PH) domains. They include the Rho guanine
nucleotide exchange factors ARHGEF9, ASEF (also called
ARHGEF4), ASEF2, and similar proteins. GEFs activate
small GTPases by exchanging bound GDP for free GTP.
ARHGEF9 specifically activates Cdc42, while both ASEF
and ASEF2 can activate Rac1 and Cdc42. ARHGEF9 is
highly expressed in the brain and it interacts with
gephyrin, a postsynaptic protein associated with GABA
and glycine receptors. ASEF plays a role in
angiogenesis and cell migration. ASEF2 is important in
cell migration and adhesion dynamics. ASEF exists in an
autoinhibited form and is activated upon binding of the
tumor suppressor APC (adenomatous polyposis coli),
leading to the activation of Rac1 or Cdc42. In its
autoinhibited form, the SH3 domain of ASEF forms an
extensive interface with the DH and PH domains,
blocking the Rac binding site. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 53
Score = 35.8 bits (83), Expect = 8e-04
Identities = 14/50 (28%), Positives = 25/50 (50%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A A ++ V EL G+++ ++ D +W+ G I G FP ++V
Sbjct: 2 AEALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDEEGWFPASFV 51
Score = 30.8 bits (70), Expect = 0.054
Identities = 14/50 (28%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
AL+++ + +EL + G+ + V++ D W+ GS + G FP ++V
Sbjct: 4 ALWDHVTMDPEELGFKAGDVIEVLDMSDKDWWWGSIRDE--EGWFPASFV 51
>gnl|CDD|212728 cd11794, SH3_DNMBP_N1, First N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the actin
cytoskeleton. It plays an important role in regulating
cell junction configuration. The four N-terminal SH3
domains of DNMBP binds the GTPase dynamin, which plays
an important role in the fission of endocytic vesicles.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 36.0 bits (83), Expect = 8e-04
Identities = 15/50 (30%), Positives = 30/50 (60%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A++++ P +EL L G+ + V++ D+ W +G+ + G G FP ++V
Sbjct: 4 AIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGT--KEGVTGQFPSSFV 51
Score = 34.4 bits (79), Expect = 0.002
Identities = 16/50 (32%), Positives = 25/50 (50%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
RA F+F EL L G+++ +++ VD W G G FP ++V
Sbjct: 2 VRAIFDFCPSVSEELPLFAGDVIEVLKVVDEFWLLGTKEGVTGQFPSSFV 51
>gnl|CDD|212891 cd11958, SH3_RUSC1, Src homology 3 domain of RUN and SH3
domain-containing protein 1. RUSC1, also called NESCA
(New molecule containing SH3 at the carboxy-terminus),
is highly expressed in the brain and is translocated to
the nuclear membrane from the cytoplasm upon
stimulation with neurotrophin. It plays a role in
facilitating neurotrophin-dependent neurite outgrowth.
It also interacts with NEMO (or IKKgamma) and may
function in NEMO-mediated activation of NF-kB. RUSC
proteins are adaptor proteins consisting of RUN,
leucine zipper, and SH3 domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 51
Score = 35.6 bits (82), Expect = 9e-04
Identities = 15/36 (41%), Positives = 21/36 (58%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTY 70
+LS KGE + ++ VD +W R G R G+ PV Y
Sbjct: 14 QLSFRKGEELQVLGTVDEDWIRCRRGDREGLVPVGY 49
>gnl|CDD|212899 cd11966, SH3_ASAP2, Src homology 3 domain of ArfGAP with SH3
domain, ankyrin repeat and PH domain containing protein
2. ASAP2 is also called DDEF2 (Development and
Differentiation Enhancing Factor 2), AMAP2, centaurin
beta-3, or PAG3. It mediates the functions of Arf
GTPases vial dual mechanisms: it exhibits GTPase
activating protein (GAP) activity towards class I
(Arf1) and II (Arf5) Arfs; and it binds class III Arfs
(GTP-Arf6) stably without GAP activity. It binds
paxillin and is implicated in Fcgamma receptor-mediated
phagocytosis in macrophages and in cell migration.
ASAP2 contains an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, an Arf GAP domain,
ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 35.7 bits (82), Expect = 0.001
Identities = 20/54 (37%), Positives = 31/54 (57%), Gaps = 3/54 (5%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIG---TRRGIFPVTYV 71
+ +A +N VA EL+ +GE++ + D W+ G I TRRG FPV++V
Sbjct: 1 RVKALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFV 54
Score = 32.2 bits (73), Expect = 0.019
Identities = 19/51 (37%), Positives = 25/51 (49%), Gaps = 1/51 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGS-SQRSGCFGTFPGNYV 150
ALYN N DEL EGE + V + D W++G G FP ++V
Sbjct: 4 ALYNCVADNPDELTFSEGEIIIVDGEEDKEWWIGHIDGEPTRRGAFPVSFV 54
>gnl|CDD|212702 cd11768, SH3_Tec_like, Src Homology 3 domain of Tec-like Protein
Tyrosine Kinases. The Tec (Tyrosine kinase expressed in
hepatocellular carcinoma) subfamily is composed of Tec,
Btk, Bmx (Etk), Itk (Tsk, Emt), Rlk (Txk), and similar
proteins. They are cytoplasmic (or nonreceptor) tyr
kinases containing Src homology protein interaction
domains (SH3, SH2) N-terminal to the catalytic tyr
kinase domain. Most Tec subfamily members (except Rlk)
also contain an N-terminal pleckstrin homology (PH)
domain, which binds the products of PI3K and allows
membrane recruitment and activation. In addition, some
members contain the Tec homology (TH) domain, which
contains proline-rich and zinc-binding regions. Tec
kinases are expressed mainly by haematopoietic cells,
although Tec and Bmx are also found in endothelial
cells. B-cells express Btk and Tec, while T-cells
express Itk, Txk, and Tec. Collectively, Tec kinases are
expressed in a variety of myeloid cells such as mast
cells, platelets, macrophages, and dendritic cells. Each
Tec kinase shows a distinct cell-type pattern of
expression. The function of Tec kinases in lymphoid
cells have been studied extensively. They play important
roles in the development, differentiation, maturation,
regulation, survival, and function of B-cells and
T-cells. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 35.7 bits (83), Expect = 0.001
Identities = 16/51 (31%), Positives = 29/51 (56%), Gaps = 1/51 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY+++P +L L +GE V++ ++ W+ + ++G G P NYV
Sbjct: 4 ALYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWR-ARDKNGNEGYIPSNYVT 53
Score = 29.5 bits (67), Expect = 0.14
Identities = 13/51 (25%), Positives = 22/51 (43%), Gaps = 1/51 (1%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYVEQ 73
A ++F +L L KGE ++ + +W+ R G P YV +
Sbjct: 4 ALYDFQPIEPGDLPLEKGEEYVVLDDSNEHWWRARDKNGNEGYIPSNYVTE 54
>gnl|CDD|212693 cd11759, SH3_CRK_C, C-terminal Src Homology 3 domain of Ct10
Regulator of Kinase adaptor proteins. CRK adaptor
proteins consists of SH2 and SH3 domains, which bind
tyrosine-phosphorylated peptides and proline-rich
motifs, respectively. They function downstream of
protein tyrosine kinases in many signaling pathways
started by various extracellular signals, including
growth and differentiation factors. Cellular CRK
(c-CRK) contains a single SH2 domain, followed by
N-terminal and C-terminal SH3 domains. It is involved
in the regulation of many cellular processes including
cell growth, motility, adhesion, and apoptosis. CRK has
been implicated in the malignancy of various human
cancers. The C-terminal SH3 domain of CRK has not been
shown to bind any target protein; it acts as a negative
regulator of CRK function by stabilizing a structure
that inhibits the access by target proteins to the
N-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes by
intramolecular interactions, changing the subcellular
localization of signal pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 35.5 bits (82), Expect = 0.001
Identities = 13/37 (35%), Positives = 22/37 (59%)
Query: 36 LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
L+L G+LV + + + +EG + + G FP T+VE
Sbjct: 20 LALEVGDLVKVTKINVSGQWEGELNGKVGHFPFTHVE 56
>gnl|CDD|212817 cd11884, SH3_MYO15, Src Homology 3 domain of Myosin XV. This
subfamily is composed of proteins with similarity to
Myosin XVa. Myosin XVa is an unconventional myosin that
is critical for the normal growth of mechanosensory
stereocilia of inner ear hair cells. Mutations in the
myosin XVa gene are associated with nonsyndromic
hearing loss. Myosin XVa contains a unique N-terminal
extension followed by a motor domain, light
chain-binding IQ motifs, and a tail consisting of a
pair of MyTH4-FERM tandems separated by a SH3 domain,
and a PDZ domain. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 56
Score = 35.4 bits (82), Expect = 0.001
Identities = 15/54 (27%), Positives = 26/54 (48%), Gaps = 3/54 (5%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRR---VDNNWFEGRIGTRRGIFPVTYVE 72
A ++ + LS KG+++ L+ + +D W G + R G FP YV+
Sbjct: 2 VVAVRAYITRDQTLLSFHKGDVIKLLPKEGPLDPGWLFGTLDGRSGAFPKEYVQ 55
>gnl|CDD|212945 cd12012, SH3_RIM-BP_2, Second Src homology 3 domain of
Rab3-interacting molecules (RIMs) binding proteins.
RIMs binding proteins (RBPs, RIM-BPs) associate with
calcium channels present in photoreceptors, neurons, and
hair cells; they interact simultaneously with specific
calcium channel subunits, and active zone proteins, RIM1
and RIM2. RIMs are part of the matrix at the presynaptic
active zone and are associated with synaptic vesicles
through their interaction with the small GTPase Rab3.
RIM-BPs play a role in regulating synaptic transmission
by serving as adaptors and linking calcium channels with
the synaptic vesicle release machinery. RIM-BPs contain
three SH3 domains and two to three fibronectin III
repeats. Invertebrates contain one, while vertebrates
contain at least two RIM-BPs, RIM-BP1 and RIM-BP2.
RIM-BP1 is also called peripheral-type benzodiazapine
receptor associated protein 1 (PRAX-1). Mammals contain
a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are
predominantly expressed in the brain where they display
overlapping but distinct expression patterns, while
RIM-BP3 is almost exclusively expressed in the testis
and is essential in spermiogenesis. The SH3 domains of
RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and
L-type (alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 62
Score = 35.3 bits (82), Expect = 0.001
Identities = 21/60 (35%), Positives = 30/60 (50%), Gaps = 11/60 (18%)
Query: 101 ALYNYKPQ----NDD----ELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYVE 151
AL++Y P N D EL +EG+ + V D DG+Y+G + +G G P N V
Sbjct: 4 ALFDYDPLTMSPNPDAAEEELPFKEGQLIKVYGDKDADGFYLG--EINGRRGLVPCNMVS 61
>gnl|CDD|212872 cd11939, SH3_ephexin1, Src homology 3 domain of the Rho guanine
nucleotide exchange factor, ephexin-1 (also called NGEF
or ARHGEF27). Ephexin-1, also called NGEF (neuronal
GEF) or ARHGEF27, activates RhoA, Tac1, and Cdc42 by
exchanging bound GDP for free GTP. It is expressed
mainly in the brain in a region associated with movement
control. It regulates the stability of postsynaptic
acetylcholine receptor (AChR) clusters and thus, plays a
critical role in the maturation and neurotransmission of
neuromuscular junctions. Ephexin-1 directly interacts
with the ephrin receptor EphA4 and their coexpression
enhances the ability of ephexin-1 to activate RhoA. It
is required for normal axon growth and EphA-induced
growth cone collapse. Ephexin-1 contains RhoGEF (also
called Dbl-homologous or DH), Pleckstrin Homology (PH),
and SH3 domains. The SH3 domains of ARHGEFs play an
autoinhibitory role through intramolecular interactions
with a proline-rich region N-terminal to the DH domain.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 35.3 bits (81), Expect = 0.001
Identities = 17/50 (34%), Positives = 25/50 (50%)
Query: 102 LYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
++ Y Q DEL L + + +++K DDGW G G FP + VE
Sbjct: 5 VHPYVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVVE 54
Score = 27.6 bits (61), Expect = 0.79
Identities = 16/48 (33%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 28 FVAQTHLELSLVKGELVTLIRRVDNNWFEG-RI-GTRRGIFPVTYVEQ 73
+V+Q ELSL +++ ++ + D+ W G R+ RG FP + VE+
Sbjct: 8 YVSQEPDELSLELADVLNILDKTDDGWIFGERLHDQERGWFPSSVVEE 55
>gnl|CDD|212890 cd11957, SH3_RUSC2, Src homology 3 domain of RUN and SH3
domain-containing protein 2. RUSC2, also called Iporin
or Interacting protein of Rab1, is expressed
ubiquitously with highest amounts in the brain and
testis. It interacts with the small GTPase Rab1 and the
Golgi matrix protein GM130, and may function in linking
GTPases to certain intracellular signaling pathways.
RUSC proteins are adaptor proteins consisting of RUN,
leucine zipper, and SH3 domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 34.9 bits (80), Expect = 0.002
Identities = 12/37 (32%), Positives = 22/37 (59%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
+LS KG+++ ++ R D +W +G G+ P+ YV
Sbjct: 15 QLSFNKGDILQVLSRADGDWLRCSLGPDSGLVPIAYV 51
>gnl|CDD|212947 cd12014, SH3_RIM-BP_1, First Src homology 3 domain of
Rab3-interacting molecules (RIMs) binding proteins.
RIMs binding proteins (RBPs, RIM-BPs) associate with
calcium channels present in photoreceptors, neurons, and
hair cells; they interact simultaneously with specific
calcium channel subunits, and active zone proteins, RIM1
and RIM2. RIMs are part of the matrix at the presynaptic
active zone and are associated with synaptic vesicles
through their interaction with the small GTPase Rab3.
RIM-BPs play a role in regulating synaptic transmission
by serving as adaptors and linking calcium channels with
the synaptic vesicle release machinery. RIM-BPs contain
three SH3 domains and two to three fibronectin III
repeats. Invertebrates contain one, while vertebrates
contain at least two RIM-BPs, RIM-BP1 and RIM-BP2.
RIM-BP1 is also called peripheral-type benzodiazapine
receptor associated protein 1 (PRAX-1). Mammals contain
a third protein, RIM-BP3. RIM-BP1 and RIM-BP2 are
predominantly expressed in the brain where they display
overlapping but distinct expression patterns, while
RIM-BP3 is almost exclusively expressed in the testis
and is essential in spermiogenesis. The SH3 domains of
RIM-BPs bind to the PxxP motifs of RIM1, RIM2, and
L-type (alpha1D) and N-type (alpha1B) calcium channel
subunits. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 62
Score = 34.6 bits (80), Expect = 0.002
Identities = 23/62 (37%), Positives = 31/62 (50%), Gaps = 9/62 (14%)
Query: 99 YHALYNYKPQ----NDD---ELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYV 150
+ A Y+Y P N++ EL L G+ V+V D DG+Y G G G P N+V
Sbjct: 2 FVARYSYNPLRDSPNENPEAELPLNAGDYVYVYGDMDEDGFYEGELL-DGRRGLVPSNFV 60
Query: 151 ER 152
ER
Sbjct: 61 ER 62
>gnl|CDD|212983 cd12050, SH3_DOCK2_A, Src Homology 3 domain of Class A Dedicator of
Cytokinesis protein 2. Dock2 is a hematopoietic
cell-specific, class A DOCK and is an atypical guanine
nucleotide exchange factor (GEF) that lacks the
conventional Dbl homology (DH) domain. It plays an
important role in lymphocyte migration and activation,
T-cell differentiation, neutrophil chemotaxis, and type
I interferon induction. All DOCKs contain two homology
domains: the DHR-1 (Dock homology region-1), also called
CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and
DHR-2 (also called CZH2 or Docker). The DHR-1 domain
binds phosphatidylinositol-3,4,5-triphosphate while
DHR-2 contains the catalytic activity for Rac and/or
Cdc42. Class A DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus;
they are specific GEFs for Rac. The SH3 domain of Dock2
binds to DHR-2 in an autoinhibitory manner; binding of
the scaffold protein Elmo to the SH3 domain of Dock2
exposes the DHR-2 domain and promotes GEF activity. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 34.4 bits (79), Expect = 0.002
Identities = 18/51 (35%), Positives = 28/51 (54%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRS-GCFGTFPGNYV 150
A+YN+K +L L+ G+ V + E C+D WY G R G FP +++
Sbjct: 4 AIYNFKGSGVPQLSLQIGDVVHIQETCED-WYKGYLVRHKDLQGIFPKSFI 53
>gnl|CDD|212887 cd11954, SH3_ASPP1, Src Homology 3 domain of Apoptosis Stimulating
of p53 protein 1. ASPP1, like ASPP2, activates the
apoptotic function of the p53 family of tumor
suppressors (p53, p63, and p73). In addition, it
functions in the cytoplasm to regulate the nuclear
localization of the transcriptional cofactors YAP and
TAZ by inihibiting their phosphorylation; YAP and TAZ
are important regulators of cell expansion,
differentiation, migration, and invasion. ASPP1 is
downregulated in breast tumors expressing wild-type p53.
It contains a proline-rich region, four ankyrin (ANK)
repeats, and an SH3 domain at its C-terminal half. The
SH3 domain and the ANK repeats of ASPP1 contribute to
the p53 binding site; they bind to the DNA binding
domain of p53. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 34.6 bits (79), Expect = 0.003
Identities = 14/45 (31%), Positives = 27/45 (60%), Gaps = 4/45 (8%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEKCDDG----WYVGSSQRSG 140
+AL++Y+ QN DEL +EG+ + ++ + DD W+ + + G
Sbjct: 4 YALWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKEG 48
Score = 33.5 bits (76), Expect = 0.006
Identities = 16/51 (31%), Positives = 28/51 (54%), Gaps = 3/51 (5%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDN---NWFEGRIGTRRGIFP 67
G A +++ AQ ELS +G+ +T++RR D+ W+ R+ + G P
Sbjct: 1 GMVYALWDYEAQNADELSFQEGDAITILRRKDDSETEWWWARLNDKEGYVP 51
>gnl|CDD|212785 cd11851, SH3_RIM-BP, Src homology 3 domains of Rab3-interacting
molecules (RIMs) binding proteins. RIMs binding
proteins (RBPs, RIM-BPs) associate with calcium channels
present in photoreceptors, neurons, and hair cells; they
interact simultaneously with specific calcium channel
subunits, and active zone proteins, RIM1 and RIM2. RIMs
are part of the matrix at the presynaptic active zone
and are associated with synaptic vesicles through their
interaction with the small GTPase Rab3. RIM-BPs play a
role in regulating synaptic transmission by serving as
adaptors and linking calcium channels with the synaptic
vesicle release machinery. RIM-BPs contain three SH3
domains and two to three fibronectin III repeats.
Invertebrates contain one, while vertebrates contain at
least two RIM-BPs, RIM-BP1 and RIM-BP2. RIM-BP1 is also
called peripheral-type benzodiazapine receptor
associated protein 1 (PRAX-1). Mammals contain a third
protein, RIM-BP3. RIM-BP1 and RIM-BP2 are predominantly
expressed in the brain where they display overlapping
but distinct expression patterns, while RIM-BP3 is
almost exclusively expressed in the testis and is
essential in spermiogenesis. The SH3 domains of RIM-BPs
bind to the PxxP motifs of RIM1, RIM2, and L-type
(alpha1D) and N-type (alpha1B) calcium channel subunits.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 62
Score = 34.6 bits (80), Expect = 0.003
Identities = 22/61 (36%), Positives = 29/61 (47%), Gaps = 9/61 (14%)
Query: 99 YHALYNYKPQ----NDD---ELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYV 150
ALY+Y P+ NDD EL G+ V V D DG+Y G + G P N+V
Sbjct: 2 MVALYDYNPETMSPNDDPEEELSFHAGDVVRVYGPMDEDGFYYGELEGGRK-GLVPSNFV 60
Query: 151 E 151
+
Sbjct: 61 Q 61
>gnl|CDD|212924 cd11991, SH3_Intersectin1_3, Third Src homology 3 domain (or SH3C)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The third SH3 domain (or SH3C) of ITSN1 has
been shown to bind many proteins including dynamin1/2,
CIN85, c-Cbl, SHIP2, Reps1, synaptojanin-1, and WNK,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 34.2 bits (78), Expect = 0.003
Identities = 17/52 (32%), Positives = 27/52 (51%), Gaps = 3/52 (5%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
Y A+Y Y+ +L ++G+ + V +K D W+ G+ G FP NYV
Sbjct: 2 YVAMYTYESNEQGDLTFQQGDVILVTKK-DGDWWTGTV--GDKTGVFPSNYV 50
Score = 33.0 bits (75), Expect = 0.007
Identities = 12/48 (25%), Positives = 29/48 (60%), Gaps = 1/48 (2%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A + + + +L+ +G+++ + ++ D +W+ G +G + G+FP YV
Sbjct: 4 AMYTYESNEQGDLTFQQGDVILVTKK-DGDWWTGTVGDKTGVFPSNYV 50
>gnl|CDD|212832 cd11899, SH3_Nck2_1, First Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The first SH3 domain of Nck2
binds the PxxDY sequence in the CD3e cytoplasmic tail;
this binding inhibits phosphorylation by Src kinases,
resulting in the downregulation of TCR surface
expression. SH3 domains are protein interaction domains
that usually bind to proline-rich ligands with moderate
affinity and selectivity, preferentially a PxxP motif.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 58
Score = 34.3 bits (78), Expect = 0.004
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
A ++Y Q D EL++++ E +++++ W V ++ + G P NYVER
Sbjct: 8 AKWDYTAQQDQELDIKKNERLWLLDDSKTWWRVRNA--ANRTGYVPSNYVER 57
Score = 27.8 bits (61), Expect = 0.81
Identities = 16/51 (31%), Positives = 24/51 (47%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQQ 74
AK+++ AQ EL + K E + L+ W R G P YVE++
Sbjct: 8 AKWDYTAQQDQELDIKKNERLWLLDDSKTWWRVRNAANRTGYVPSNYVERK 58
>gnl|CDD|212920 cd11987, SH3_Intersectin1_1, First Src homology 3 domain (or SH3A)
of Intersectin-1. Intersectin-1 (ITSN1) is an adaptor
protein that functions in exo- and endocytosis, actin
cytoskeletal reorganization, and signal transduction. It
plays a role in clathrin-coated pit (CCP) formation. It
binds to many proteins through its multidomain structure
and facilitate the assembly of multimeric complexes.
ITSN1 localizes in membranous organelles, CCPs, the
Golgi complex, and may be involved in the cell membrane
trafficking system. It exists in alternatively spliced
short and long isoforms. The short isoform contains two
Eps15 homology domains (EH1 and EH2), a coiled-coil
region and five SH3 domains (SH3A-E), while the long
isoform, in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The first SH3 domain (or SH3A) of ITSN1 has
been shown to bind many proteins including Sos1,
dynamin1/2, CIN85, c-Cbl, PI3K-C2, SHIP2, N-WASP, and
CdGAP, among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 34.2 bits (78), Expect = 0.004
Identities = 20/56 (35%), Positives = 31/56 (55%), Gaps = 4/56 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEK--CDDGWYVGSSQRSGCFGTFPGNYVER 152
Y ALY ++ ++ DE+ ++ G+ V V E + GW G + G G FP NY E+
Sbjct: 2 YRALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGG--ELKGKTGWFPANYAEK 55
Score = 28.8 bits (64), Expect = 0.30
Identities = 15/53 (28%), Positives = 29/53 (54%), Gaps = 2/53 (3%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTL--IRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
RA + F A++H E+++ G++V + + + W G + + G FP Y E+
Sbjct: 3 RALYPFEARSHDEITIQPGDIVMVDESQTGEPGWLGGELKGKTGWFPANYAEK 55
>gnl|CDD|212986 cd12053, SH3_CD2AP_1, First Src Homology 3 domain (SH3A) of
CD2-associated protein. CD2AP, also called CMS (Cas
ligand with Multiple SH3 domains) or METS1
(Mesenchyme-to-Epithelium Transition protein with SH3
domains), is a cytosolic adaptor protein that plays a
role in regulating the cytoskeleton. It is critical in
cell-to-cell union necessary for kidney function. It
also stabilizes the contact between a T cell and
antigen-presenting cells. It is primarily expressed in
podocytes at the cytoplasmic face of the slit diaphragm
and serves as a linker anchoring podocin and nephrin to
the actin cytoskeleton. CD2AP contains three SH3
domains, a proline-rich region, and a C-terminal
coiled-coil domain. All of these domains enable CD2AP to
bind various protein partners and assemble complexes
that have been implicated in many different functions.
This alignment model represents the first SH3 domain
(SH3A) of CD2AP. SH3A binds to the PXXXPR motif present
in c-Cbl and the cytoplasmic domain of cell adhesion
protein CD2. Its interaction with CD2 anchors CD2 at
sites of cell contact. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 34.0 bits (78), Expect = 0.004
Identities = 18/50 (36%), Positives = 31/50 (62%), Gaps = 3/50 (6%)
Query: 103 YNYKPQNDDELELREGETVFVMEKC-DDGWYVGSSQRSGCFGTFPGNYVE 151
Y+Y ++DEL +R GE + ++K ++GW G + +G G FP N+V+
Sbjct: 6 YDYDAVHEDELTIRVGEIIRNVKKLEEEGWLEG--ELNGRRGMFPDNFVK 53
Score = 33.3 bits (76), Expect = 0.006
Identities = 13/40 (32%), Positives = 27/40 (67%), Gaps = 1/40 (2%)
Query: 35 ELSLVKGELVTLIRRV-DNNWFEGRIGTRRGIFPVTYVEQ 73
EL++ GE++ ++++ + W EG + RRG+FP +V++
Sbjct: 15 ELTIRVGEIIRNVKKLEEEGWLEGELNGRRGMFPDNFVKE 54
>gnl|CDD|212919 cd11986, SH3_Stac3_1, First C-terminal Src homology 3 domain of
SH3 and cysteine-rich domain-containing protein 3
(Stac3). Stac proteins are putative adaptor proteins
that contain a cysteine-rich C1 domain and one or two
SH3 domains at the C-terminus. There are three
mammalian members (Stac1, Stac2, and Stac3) of this
family. Stac1 and Stac3 contain two SH3 domains while
Stac2 contains a single SH3 domain at the C-terminus.
Stac1 and Stac2 have been found to be expressed
differently in mature dorsal root ganglia (DRG)
neurons. Stac1 is mainly expressed in peptidergic
neurons while Stac2 is found in a subset of
nonpeptidergic and all trkB+ neurons. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 34.1 bits (78), Expect = 0.004
Identities = 15/48 (31%), Positives = 26/48 (54%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A + F A +L GE +T+I + W+ G+IG + G FP+ ++
Sbjct: 4 ALYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKTGYFPMNFI 51
Score = 33.0 bits (75), Expect = 0.008
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
+ ALY +K D+L+ GE + V++ ++ W+ G G FP N++ R
Sbjct: 2 FVALYRFKALEKDDLDFHPGERITVIDDSNEEWWRGKIGEKT--GYFPMNFIIR 53
>gnl|CDD|212783 cd11849, SH3_SPIN90, Src homology 3 domain of SH3 protein
interacting with Nck, 90 kDa (SPIN90). SPIN90 is also
called NCK interacting protein with SH3 domain
(NCKIPSD), Dia-interacting protein (DIP), 54 kDa
vimentin-interacting protein (VIP54), or
WASP-interacting SH3-domain protein (WISH). It is an
F-actin binding protein that regulates actin
polymerization and endocytosis. It associates with the
Arp2/3 complex near actin filaments and determines
filament localization at the leading edge of
lamellipodia. SPIN90 is expressed in the early stages of
neuronal differentiation and plays a role in regulating
growth cone dynamics and neurite outgrowth. It also
interacts with IRSp53 and regulates cell motility by
playing a role in the formation of membrane protrusions.
SPIN90 contains an N-terminal SH3 domain, a proline-rich
domain, and a C-terminal VCA (verprolin-homology and
cofilin-like acidic) domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 33.8 bits (78), Expect = 0.004
Identities = 19/53 (35%), Positives = 31/53 (58%), Gaps = 1/53 (1%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y ALY++K + L EGET ++E+ + W++ ++ SG G P NYV+
Sbjct: 2 YRALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLVTN-HSGETGYVPANYVK 53
Score = 27.7 bits (62), Expect = 0.61
Identities = 14/51 (27%), Positives = 23/51 (45%), Gaps = 1/51 (1%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFE-GRIGTRRGIFPVTYVE 72
RA ++F + LS +GE L+ R + +W+ G P YV+
Sbjct: 3 RALYDFKSAEPNTLSFSEGETFLLLERSNAHWWLVTNHSGETGYVPANYVK 53
>gnl|CDD|212766 cd11832, SH3_Shank, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains (Shank) proteins. Shank
proteins carry scaffolding functions through multiple
sites of protein-protein interaction in its domain
architecture, including ankyrin (ANK) repeats, a long
proline rich region, as well as SH3, PDZ, and SAM
domains. They bind a variety of membrane and cytosolic
proteins, and exist in alternatively spliced isoforms.
They are highly enriched in postsynaptic density (PSD)
where they interact with the cytoskeleton and with
postsynaptic membrane receptors including NMDA and
glutamate receptors. They are crucial in the
construction and organization of the PSD and dendritic
spines of excitatory synapses. There are three members
of this family (Shank1, Shank2, Shank3) which show
distinct and cell-type specific patterns of expression.
Shank1 is brain-specific; Shank2 is found in neurons,
glia, endocrine cells, liver, and kidney; Shank3 is
widely expressed. The SH3 domain of Shank binds GRIP, a
scaffold protein that binds AMPA receptors and Eph
receptors/ligands. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 50
Score = 33.6 bits (77), Expect = 0.004
Identities = 14/44 (31%), Positives = 24/44 (54%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFP 67
A ++ Q E+SL KG+ V ++ + ++EG + R G FP
Sbjct: 4 AVKSYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVRGRTGWFP 47
Score = 27.0 bits (60), Expect = 1.0
Identities = 16/48 (33%), Positives = 28/48 (58%), Gaps = 2/48 (4%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFP 146
+ A+ +Y PQ + E+ L +G+ V V+ + G++ GS + G G FP
Sbjct: 2 FIAVKSYSPQEEGEISLHKGDRVKVLSIGEGGFWEGSVR--GRTGWFP 47
>gnl|CDD|212845 cd11912, SH3_Bzz1_1, First Src Homology 3 domain of Bzz1 and
similar domains. Bzz1 (or Bzz1p) is a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Together with other proteins, it induces
membrane scission in yeast. Bzz1 contains an N-terminal
F-BAR (FES-CIP4 Homology and Bin/Amphiphysin/Rvs), a
central coiled-coil, and two C-terminal SH3 domains.
This model represents the first C-terminal SH3 domain.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 33.7 bits (78), Expect = 0.005
Identities = 15/30 (50%), Positives = 19/30 (63%), Gaps = 1/30 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDG 130
LY+Y DDE+ + EGE V V+E DDG
Sbjct: 4 VLYDYTASGDDEVSISEGEEVTVLEP-DDG 32
Score = 33.0 bits (76), Expect = 0.008
Identities = 16/54 (29%), Positives = 31/54 (57%), Gaps = 2/54 (3%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNN-WFEGRIGTRR-GIFPVTYVE 72
A+ +++ A E+S+ +GE VT++ D + W + R G+ G+ P +Y+E
Sbjct: 1 TAKVLYDYTASGDDEVSISEGEEVTVLEPDDGSGWTKVRNGSGEEGLVPTSYIE 54
>gnl|CDD|212778 cd11844, SH3_CAS, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding proteins. CAS proteins function
as molecular scaffolds to regulate protein complexes
that are involved in many cellular processes including
migration, chemotaxis, apoptosis, differentiation, and
progenitor cell function. They mediate the signaling of
integrins at focal adhesions where they localize, and
thus, regulate cell invasion and survival.
Over-expression of these proteins is implicated in poor
prognosis, increased metastasis, and resistance to
chemotherapeutics in many cancers such as breast, lung,
melanoma, and glioblastoma. CAS proteins have also been
linked to the pathogenesis of inflammatory disorders,
Alzheimer's, Parkinson's, and developmental defects.
They share a common domain structure that includes an
N-terminal SH3 domain, an unstructured substrate domain
that contains many YxxP motifs, a serine-rich four-helix
bundle, and a FAT-like C-terminal domain. Vertebrates
contain four CAS proteins: BCAR1 (or p130Cas), NEDD9 (or
HEF1), EFS (or SIN), and CASS4 (or HEPL). The SH3 domain
of CAS proteins binds to diverse partners including FAK,
FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 33.5 bits (77), Expect = 0.006
Identities = 18/54 (33%), Positives = 30/54 (55%), Gaps = 5/54 (9%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD---DGWYVGSSQRSGCFGTFPGNYVE 151
ALY+ ++ DEL R G+ + V+E+ +GW++ S G G PGN ++
Sbjct: 4 ALYDNVAESPDELAFRRGDILTVLEQNTAGLEGWWLCS--LRGRQGIAPGNRLK 55
Score = 25.4 bits (56), Expect = 5.8
Identities = 14/49 (28%), Positives = 29/49 (59%), Gaps = 3/49 (6%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVD---NNWFEGRIGTRRGIFP 67
ARA ++ VA++ EL+ +G+++T++ + W+ + R+GI P
Sbjct: 2 ARALYDNVAESPDELAFRRGDILTVLEQNTAGLEGWWLCSLRGRQGIAP 50
>gnl|CDD|212885 cd11952, SH3_iASPP, Src Homology 3 (SH3) domain of Inhibitor of
ASPP protein (iASPP). iASPP, also called
RelA-associated inhibitor (RAI), is an oncoprotein that
inhibits the apoptotic transactivation potential of p53.
It is upregulated in human breast cancers expressing
wild-type p53, in acute leukemias regardless of the p53
mutation status, as well as in ovarian cancer where it
is associated with poor patient outcome and
chemoresistance. iASPP is also a binding partner and
negative regulator of p65RelA, which promotes cell
proliferation and inhibits apoptosis; p65RelA has the
opposite effect on cell growth compared to the p53
family. It contains a proline-rich region, four ankyrin
(ANK) repeats, and an SH3 domain at its C-terminal half.
The SH3 domain and the ANK repeats of iASPP contribute
to the p53 binding site; they bind to the DNA binding
domain of p53. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 33.7 bits (77), Expect = 0.006
Identities = 19/52 (36%), Positives = 28/52 (53%), Gaps = 4/52 (7%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEKCDDG--WYVGSSQRSGCFGTFPGNY 149
+AL++Y + DEL +EG+ V V+ K +G W+ S G G P NY
Sbjct: 4 YALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWAS--LCGREGYVPRNY 53
Score = 26.8 bits (59), Expect = 1.7
Identities = 15/53 (28%), Positives = 28/53 (52%), Gaps = 2/53 (3%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRR--VDNNWFEGRIGTRRGIFPVTY 70
G A +++ A+ ELS +G++VT++R+ +W+ + R G P Y
Sbjct: 1 GVVYALWDYSAEFPDELSFKEGDMVTVLRKDGEGTDWWWASLCGREGYVPRNY 53
>gnl|CDD|212731 cd11797, SH3_DNMBP_N4, Fourth N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the
actin cytoskeleton. It plays an important role in
regulating cell junction configuration. The four
N-terminal SH3 domains of DNMBP bind the GTPase
dynamin, which plays an important role in the fission
of endocytic vesicles. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 50
Score = 33.2 bits (76), Expect = 0.007
Identities = 16/44 (36%), Positives = 24/44 (54%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFP 67
A + F A EL G+ + +I +++ W EG + RRGIFP
Sbjct: 4 ALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELKGRRGIFP 47
Score = 28.9 bits (65), Expect = 0.21
Identities = 14/46 (30%), Positives = 24/46 (52%), Gaps = 2/46 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFP 146
ALY ++ +EL+ G+ + ++ +DGW G + G G FP
Sbjct: 4 ALYRFQALEPNELDFEVGDRIRIIATLEDGWLEGELK--GRRGIFP 47
>gnl|CDD|212800 cd11866, SH3_SKAP1-like, Src Homology 3 domain of Src
Kinase-Associated Phosphoprotein 1 and similar proteins.
This subfamily is composed of SKAP1, SKAP2, and similar
proteins. SKAP1 and SKAP2 are immune cell-specific
adaptor proteins that play roles in T- and B-cell
adhesion, respectively, and are thus important in the
migration of T- and B-cells to sites of inflammation and
for movement during T-cell conjugation with
antigen-presenting cells. Both SKAP1 and SKAP2 bind to
ADAP (adhesion and degranulation-promoting adaptor
protein), among many other binding partners. They
contain a pleckstrin homology (PH) domain, a C-terminal
SH3 domain, and several tyrosine phosphorylation sites.
The SH3 domain of SKAP1 is necessary for its ability to
regulate T-cell conjugation with antigen-presenting
cells and the formation of LFA-1 clusters. SKAP1 binds
primarily to a proline-rich region of ADAP through its
SH3 domain; its degradation is regulated by ADAP. A
secondary interaction occurs via the ADAP SH3 domain and
the RKxxYxxY motif in SKAP1. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 33.2 bits (76), Expect = 0.008
Identities = 16/54 (29%), Positives = 27/54 (50%), Gaps = 4/54 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDD--GWYVGSSQRSGCFGTFPGNYV 150
Y L++ DEL + G+ ++++ K D GW+VG G G P +Y+
Sbjct: 2 YMGLWDCSGNEPDELSFKRGDLIYIISKEYDSFGWWVGELN--GKVGLVPKDYL 53
>gnl|CDD|212740 cd11806, SH3_PRMT2, Src homology 3 domain of Protein arginine
N-methyltransferase 2. PRMT2, also called HRMT1L1,
belongs to the arginine methyltransferase protein
family. It functions as a coactivator to both estrogen
receptor alpha (ER-alpha) and androgen receptor (AR),
presumably through arginine methylation. The ER-alpha
transcription factor is involved in cell proliferation,
differentiation, morphogenesis, and apoptosis, and is
also implicated in the development and progression of
breast cancer. PRMT2 and its variants are upregulated in
breast cancer cells and may be involved in modulating
the ER-alpha signaling pathway during formation of
breast cancer. PRMT2 also plays a role in regulating the
function of E2F transcription factors, which are
critical cell cycle regulators, by binding to the
retinoblastoma gene product (RB). It contains an
N-terminal SH3 domain and an AdoMet binding domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 33.1 bits (76), Expect = 0.008
Identities = 12/52 (23%), Positives = 26/52 (50%), Gaps = 2/52 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
Y A+ ++ +D +L G+ + V+ K W+ + +GC G P +++
Sbjct: 2 YVAIADFVATDDSQLSFESGDKLLVLRKPSVDWWWA--EHNGCCGYIPASHL 51
Score = 29.7 bits (67), Expect = 0.12
Identities = 11/47 (23%), Positives = 23/47 (48%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+FVA +LS G+ + ++R+ +W+ G P +++ Q
Sbjct: 7 DFVATDDSQLSFESGDKLLVLRKPSVDWWWAEHNGCCGYIPASHLHQ 53
>gnl|CDD|212818 cd11885, SH3_SH3TC, Src Homology 3 domain of SH3 domain and
tetratricopeptide repeat-containing (SH3TC) proteins and
similar domains. This subfamily is composed of
vertebrate SH3TC proteins and hypothetical fungal
proteins containing BAR and SH3 domains. Mammals contain
two SH3TC proteins, SH3TC1 and SH3TC2. The function of
SH3TC1 is unknown. SH3TC2 is localized in Schwann cells
in the peripheral nervous system, where it interacts
with Rab11 and plays a role in peripheral nerve
myelination. Mutations in SH3TC2 are associated with
Charcot-Marie-Tooth disease type 4C, a severe hereditary
peripheral neuropathy with symptoms that include
progressive scoliosis, delayed age of walking, muscular
atrophy, distal weakness, and reduced nerve conduction
velocity. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 55
Score = 33.1 bits (76), Expect = 0.008
Identities = 15/52 (28%), Positives = 27/52 (51%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDG--WYVGSSQRSGCFGTFPGNYV 150
A +++ EL R+G+++ ++ G W+VG S+ SG G P N+
Sbjct: 4 AKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 55
Score = 27.7 bits (62), Expect = 0.79
Identities = 15/55 (27%), Positives = 23/55 (41%), Gaps = 4/55 (7%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDN--NWFEGRIGT--RRGIFPVTYV 71
AK +F ELS +G+ + +I + WF GR + R G P +
Sbjct: 1 SCTAKMDFEGVEPGELSFRQGDSIEIIGDLIPGLQWFVGRSKSSGRVGFVPTNHF 55
>gnl|CDD|212886 cd11953, SH3_ASPP2, Src Homology 3 (SH3) domain of Apoptosis
Stimulating of p53 protein 2. ASPP2 is the full length
form of the previously-identified tumor supressor,
p53-binding protein 2 (p53BP2). ASPP2 activates the
apoptotic function of the p53 family of tumor
suppressors (p53, p63, and p73). It plays a central role
in regulating apoptosis and cell growth; ASPP2-deficient
mice show postnatal death. Downregulated expression of
ASPP2 is frequently found in breast tumors, lung cancer,
and diffuse large B-cell lymphoma where it is correlated
with a poor clinical outcome. ASPP2 contains a
proline-rich region, four ankyrin (ANK) repeats, and an
SH3 domain at its C-terminal half. The SH3 domain and
the ANK repeats of ASPP2 contribute to the p53 binding
site; they bind to the DNA binding domain of p53. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 33.0 bits (75), Expect = 0.008
Identities = 10/30 (33%), Positives = 23/30 (76%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEKCDD 129
+AL++Y+ ++DDEL +EG+ + ++ + D+
Sbjct: 4 YALWDYEGESDDELSFKEGDCMTILRREDE 33
Score = 26.1 bits (57), Expect = 2.6
Identities = 14/51 (27%), Positives = 28/51 (54%), Gaps = 3/51 (5%)
Query: 20 GQARAKFNFVAQTHLELSLVKGELVTLIRRVDNN---WFEGRIGTRRGIFP 67
G A +++ ++ ELS +G+ +T++RR D + W+ R+ + G P
Sbjct: 1 GVVYALWDYEGESDDELSFKEGDCMTILRREDEDETEWWWARLNDKEGYVP 51
>gnl|CDD|212898 cd11965, SH3_ASAP1, Src homology 3 domain of ArfGAP with SH3
domain, ankyrin repeat and PH domain containing protein
1. ASAP1 is also called DDEF1 (Development and
Differentiation Enhancing Factor 1), AMAP1, centaurin
beta-4, or PAG2. an Arf GTPase activating protein (GAP)
with activity towards Arf1 and Arf5 but not Arf6.
However, it has been shown to bind GTP-Arf6 stably
without GAP activity. It has been implicated in cell
growth, migration, and survival, as well as in tumor
invasion and malignancy. It binds paxillin and
cortactin, two components of invadopodia which are
essential for tumor invasiveness. It also binds focal
adhesion kinase (FAK) and the SH2/SH3 adaptor CrkL.
ASAP1 contains an N-terminal BAR domain, followed by a
Pleckstrin homology (PH) domain, an Arf GAP domain,
ankyrin (ANK) repeats, and a C-terminal SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 33.1 bits (75), Expect = 0.009
Identities = 16/45 (35%), Positives = 24/45 (53%), Gaps = 4/45 (8%)
Query: 102 LYNYKPQNDDELELREGETVFVMEKCDDGWYVGS----SQRSGCF 142
+Y+ + NDDEL EGE + V + D W++G +R G F
Sbjct: 5 IYDCQADNDDELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVF 49
Score = 31.9 bits (72), Expect = 0.022
Identities = 15/40 (37%), Positives = 25/40 (62%), Gaps = 3/40 (7%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIG---TRRGIFPVTYV 71
EL+ V+GE++ + D W+ G I R+G+FPV++V
Sbjct: 15 ELTFVEGEVIIVTGEEDQEWWIGHIEGQPERKGVFPVSFV 54
>gnl|CDD|212833 cd11900, SH3_Nck1_1, First Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The first SH3
domain of Nck1 binds the PxxDY sequence in the CD3e
cytoplasmic tail; this binding inhibits phosphorylation
by Src kinases, resulting in the downregulation of TCR
surface expression. SH3 domains are protein interaction
domains that usually bind to proline-rich ligands with
moderate affinity and selectivity, preferentially a PxxP
motif. They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 33.2 bits (75), Expect = 0.010
Identities = 16/52 (30%), Positives = 29/52 (55%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
A ++Y Q D EL++++ E +++++ W V ++ F P NYVER
Sbjct: 7 AKFDYVAQQDQELDIKKNERLWLLDDSKSWWRVRNAMNKTGF--VPSNYVER 56
Score = 30.1 bits (67), Expect = 0.13
Identities = 17/52 (32%), Positives = 27/52 (51%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQQS 75
AKF++VAQ EL + K E + L+ + W + G P YVE+++
Sbjct: 7 AKFDYVAQQDQELDIKKNERLWLLDDSKSWWRVRNAMNKTGFVPSNYVERKN 58
>gnl|CDD|212837 cd11904, SH3_Nck1_3, Third Src Homology 3 domain of Nck1 adaptor
protein. Nck1 (also called Nckalpha) plays a crucial
role in connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds and activates RasGAP,
resulting in the downregulation of Ras. It is also
involved in the signaling of endothilin-mediated
inhibition of cell migration. Nck adaptor proteins
regulate actin cytoskeleton dynamics by linking
proline-rich effector molecules to protein tyrosine
kinases and phosphorylated signaling intermediates. They
contain three SH3 domains and a C-terminal SH2 domain.
They function downstream of the PDGFbeta receptor and
are involved in Rho GTPase signaling and actin dynamics.
Vertebrates contain two Nck adaptor proteins: Nck1 (also
called Nckalpha) and Nck2, which show partly overlapping
functions but also bind distinct targets. The third SH3
domain of Nck appears to prefer ligands with a PxAPxR
motif. SH3 domains are protein interaction domains that
usually bind to proline-rich ligands with moderate
affinity and selectivity, preferentially a PxxP motif.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 32.7 bits (74), Expect = 0.012
Identities = 20/53 (37%), Positives = 28/53 (52%), Gaps = 3/53 (5%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEK--CDDGWYVGSSQRSGCFGTFPGNYV 150
ALY + ND+EL +GE + V+EK D W+ + +G G P NYV
Sbjct: 4 QALYPFSSSNDEELNFEKGEVMDVIEKPENDPEWW-KCRKANGQVGLVPKNYV 55
>gnl|CDD|212699 cd11765, SH3_Nck_1, First Src Homology 3 domain of Nck adaptor
proteins. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4), which show partly
overlapping functions but also bind distinct targets.
Their SH3 domains are involved in recruiting downstream
effector molecules, such as the N-WASP/Arp2/3 complex,
which when activated induces actin polymerization that
results in the production of pedestals, or protrusions
of the plasma membrane. The first SH3 domain of Nck
proteins preferentially binds the PxxDY sequence, which
is present in the CD3e cytoplasmic tail. This binding
inhibits phosphorylation by Src kinases, resulting in
the downregulation of TCR surface expression. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 51
Score = 32.4 bits (74), Expect = 0.014
Identities = 16/50 (32%), Positives = 25/50 (50%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A Y+Y Q D EL +++ E + +++ W V +S G P NYV
Sbjct: 4 AKYDYTAQGDQELSIKKNEKLTLLDDSKHWWKVQNSSNQ--TGYVPSNYV 51
Score = 27.4 bits (61), Expect = 0.99
Identities = 17/51 (33%), Positives = 30/51 (58%), Gaps = 6/51 (11%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDN--NWFEGRIGTRR-GIFPVTYV 71
AK+++ AQ ELS+ K E +TL+ D+ +W++ + + + G P YV
Sbjct: 4 AKYDYTAQGDQELSIKKNEKLTLL---DDSKHWWKVQNSSNQTGYVPSNYV 51
>gnl|CDD|213009 cd12076, SH3_Tks4_2, Second Src homology 3 domain of Tyrosine
kinase substrate with four SH3 domains. Tks4, also
called SH3 and PX domain-containing protein 2B
(SH3PXD2B) or HOFI, is a Src substrate and scaffolding
protein that plays an important role in the formation of
podosomes and invadopodia, the dynamic actin-rich
structures that are related to cell migration and cancer
cell invasion. It is required in the formation of
functional podosomes, EGF-induced membrane ruffling, and
lamellipodia generation. It plays an important role in
cellular attachment and cell spreading. Tks4 is
essential for the localization of MT1-MMP (membrane-type
1 matrix metalloproteinase) to invadopodia. It contains
an N-terminal Phox homology (PX) domain and four SH3
domains. This model characterizes the second SH3 domain
of Tks4. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 32.3 bits (73), Expect = 0.017
Identities = 17/54 (31%), Positives = 30/54 (55%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y +Y Y ++ DE+ L +G V V++K +GW+ Q G G P +Y+++
Sbjct: 3 YTVIYPYTARDQDEINLEKGAVVEVIQKNLEGWWKIRYQ--GKEGWAPASYLKK 54
>gnl|CDD|212747 cd11813, SH3_SGSM3, Src Homology 3 domain of Small G protein
Signaling Modulator 3. SGSM3 is also called
Merlin-associated protein (MAP), RUN and SH3
domain-containing protein (RUSC3), RUN and TBC1
domain-containing protein 3 (RUTBC3), Rab
GTPase-activating protein 5 (RabGAP5), or Rab GAP-like
protein (RabGAPLP). It is expressed ubiquitously and
functions as a regulator of small G protein RAP- and
RAB-mediated neuronal signaling. It is involved in
modulating NGF-mediated neurite outgrowth and
differentiation. It also interacts with the tumor
suppressor merlin and may play a role in the
merlin-associated suppression of cell growth. SGSM3
contains TBC, SH3, and RUN domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 53
Score = 32.1 bits (73), Expect = 0.017
Identities = 16/52 (30%), Positives = 28/52 (53%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A+A +F EL K +++T+I + D + + G + RG FP +VE
Sbjct: 1 RAKALLDFERHDDDELGFRKNDIITIISQKDEHCWVGELNGLRGWFPAKFVE 52
Score = 31.7 bits (72), Expect = 0.029
Identities = 16/51 (31%), Positives = 31/51 (60%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
AL +++ +DDEL R+ + + ++ + D+ +VG + +G G FP +VE
Sbjct: 4 ALLDFERHDDDELGFRKNDIITIISQKDEHCWVG--ELNGLRGWFPAKFVE 52
>gnl|CDD|212922 cd11989, SH3_Intersectin1_2, Second Src homology 3 domain (or
SH3B) of Intersectin-1. Intersectin-1 (ITSN1) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN1 localizes in membranous
organelles, CCPs, the Golgi complex, and may be
involved in the cell membrane trafficking system. It
exists in alternatively spliced short and long
isoforms. The short isoform contains two Eps15 homology
domains (EH1 and EH2), a coiled-coil region and five
SH3 domains (SH3A-E), while the long isoform, in
addition, contains RhoGEF (also called Dbl-homologous
or DH), Pleckstrin homology (PH) and C2 domains. The
second SH3 domain (or SH3B) of ITSN1 has been shown to
bind WNK and CdGAP. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 32.0 bits (72), Expect = 0.018
Identities = 16/52 (30%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
QA+A + + A+ L+ K +++T++ + D WF G + ++G FP +YV+
Sbjct: 1 QAQALYPWRAKKDNHLNFNKNDVITVLEQQDMWWF-GEVQGQKGWFPKSYVK 51
Score = 31.6 bits (71), Expect = 0.033
Identities = 17/52 (32%), Positives = 29/52 (55%), Gaps = 3/52 (5%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY ++ + D+ L + + + V+E+ D W+ G Q G G FP +YV+
Sbjct: 3 QALYPWRAKKDNHLNFNKNDVITVLEQ-QDMWWFGEVQ--GQKGWFPKSYVK 51
>gnl|CDD|212937 cd12004, SH3_Lyn, Src homology 3 domain of Lyn Protein Tyrosine
Kinase. Lyn is a member of the Src subfamily of
proteins, which are cytoplasmic (or non-receptor) PTKs.
Lyn is expressed in B lymphocytes and myeloid cells. It
exhibits both positive and negative regulatory roles in
B cell receptor (BCR) signaling. Lyn, as well as Fyn and
Blk, promotes B cell activation by phosphorylating ITAMs
(immunoreceptor tyr activation motifs) in CD19 and in Ig
components of BCR. It negatively regulates signaling by
its unique ability to phosphorylate ITIMs
(immunoreceptor tyr inhibition motifs) in cell surface
receptors like CD22 and CD5. Lyn also plays an important
role in G-CSF receptor signaling by phosphorylating a
variety of adaptor molecules. Src kinases contain an
N-terminal SH4 domain with a myristoylation site,
followed by SH3 and SH2 domains, a tyr kinase domain,
and a regulatory C-terminal region containing a
conserved tyr. They are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). The SH3 domain of Src kinases
contributes to substrate recruitment by binding adaptor
proteins/substrates, and regulation of kinase activity
through an intramolecular interaction. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 31.9 bits (72), Expect = 0.021
Identities = 17/54 (31%), Positives = 30/54 (55%), Gaps = 1/54 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVERAS 154
ALY Y ++D+L ++GE + V+E+ + W+ S + G P NYV + +
Sbjct: 4 ALYPYDGIHEDDLSFKKGEKLKVIEEHGE-WWKARSLTTKKEGFIPSNYVAKVN 56
>gnl|CDD|213005 cd12072, SH3_FNBP1L, Src Homology 3 domain of Formin Binding
Protein 1-Like. FormiN Binding Protein 1-Like (FNBP1L),
also known as Toca-1 (Transducer of Cdc42-dependent
actin assembly), forms a complex with neural
Wiskott-Aldrich syndrome protein (N-WASP). The
FNBP1L/N-WASP complex induces the formation of filopodia
and endocytic vesicles. FNBP1L is required for
Cdc42-induced actin assembly and is essential for
autophagy of intracellular pathogens. It contains an
N-terminal F-BAR domain, a central Cdc42-binding HR1
domain, and a C-terminal SH3 domain. The SH3 domain of
the related protein, CIP4, associates with Gapex-5, a
Rab31 GEF. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 57
Score = 31.9 bits (72), Expect = 0.021
Identities = 17/52 (32%), Positives = 32/52 (61%), Gaps = 2/52 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYVE 151
ALY + N+ L ++EGE ++++E+ DGW + +++G G P +Y+E
Sbjct: 5 ALYPFDGSNEGTLAMKEGEVLYIIEEDKGDGW-TRARKQNGEEGYVPTSYIE 55
>gnl|CDD|212935 cd12002, SH3_NEDD9, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member, Neural
precursor cell Expressed, Developmentally Down-regulated
9. NEDD9 is also called human enhancer of filamentation
1 (HEF1) or CAS-L (Crk-associated substrate in
lymphocyte). It was first described as a gene
predominantly expressed in early embryonic brain, and
was also isolated from a screen of human proteins that
regulate filamentous budding in yeast, and as a tyrosine
phosphorylated protein in lymphocytes. It promotes
metastasis in different solid tumors. NEDD9 localizes in
focal adhesions and associates with FAK and Abl kinase.
It also interacts with SMAD3 and the proteasomal
machinery which allows its rapid turnover; these
interactions are not shared by other CAS proteins. CAS
proteins function as molecular scaffolds to regulate
protein complexes that are involved in many cellular
processes. They share a common domain structure that
includes an N-terminal SH3 domain, an unstructured
substrate domain that contains many YxxP motifs, a
serine-rich four-helix bundle, and a FAT-like C-terminal
domain. The SH3 domain of CAS proteins binds to diverse
partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 31.5 bits (71), Expect = 0.031
Identities = 18/54 (33%), Positives = 31/54 (57%), Gaps = 5/54 (9%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD---DGWYVGSSQRSGCFGTFPGNYVE 151
ALY+ P+ +EL R+G+ + V+E+ +GW++ S G G PGN ++
Sbjct: 4 ALYDNVPECAEELAFRKGDILTVIEQNTGGLEGWWLCSLH--GRQGIAPGNRLK 55
Score = 26.1 bits (57), Expect = 2.7
Identities = 15/49 (30%), Positives = 27/49 (55%), Gaps = 3/49 (6%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDN---NWFEGRIGTRRGIFP 67
ARA ++ V + EL+ KG+++T+I + W+ + R+GI P
Sbjct: 2 ARALYDNVPECAEELAFRKGDILTVIEQNTGGLEGWWLCSLHGRQGIAP 50
>gnl|CDD|212978 cd12045, SH3_SKAP2, Src Homology 3 domain of Src Kinase-Associated
Phosphoprotein 2. SKAP2, also called SKAP55-Related
(SKAP55R) or SKAP55 homolog (SKAP-HOM or SKAP55-HOM), is
an immune cell-specific adaptor protein that plays an
important role in adhesion and migration of B-cells and
macrophages. Binding partners include ADAP (adhesion and
degranulation-promoting adaptor protein), YopH, SHPS1,
and HPK1. SKAP2 has also been identified as a substrate
for lymphoid-specific tyrosine phosphatase (Lyp), which
has been implicated in a wide variety of autoimmune
diseases. It contains a pleckstrin homology (PH) domain,
a C-terminal SH3 domain, and several tyrosine
phosphorylation sites. Like SKAP1, SKAP2 is expected to
bind primarily to a proline-rich region of ADAP through
its SH3 domain; its degradation may be regulated by
ADAP. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 31.0 bits (70), Expect = 0.040
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 4/54 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDD--GWYVGSSQRSGCFGTFPGNYV 150
Y L++ DEL + G+T++++ K + GW+VG + G G P Y+
Sbjct: 2 YQGLWDCTGDQPDELSFKRGDTIYILSKEYNRFGWWVG--EMKGTIGLVPKAYI 53
>gnl|CDD|212742 cd11808, SH3_Alpha_Spectrin, Src homology 3 domain of Alpha
Spectrin. Spectrin is a major structural component of
the red blood cell membrane skeleton and is important
in erythropoiesis and membrane biogenesis. It is a
flexible, rope-like molecule composed of two subunits,
alpha and beta, which consist of many spectrin-type
repeats. Alpha and beta spectrin associate to form
heterodimers and tetramers; spectrin tetramer formation
is critical for red cell shape and deformability.
Defects in alpha spectrin have been associated with
inherited hemolytic anemias including hereditary
spherocytosis (HSp), hereditary elliptocytosis (HE),
and hereditary pyropoikilocytosis (HPP). Alpha spectrin
contains a middle SH3 domain and a C-terminal EF-hand
binding motif in addition to multiple spectrin repeats.
SH3 domains are protein interaction domains that bind
to proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 31.3 bits (71), Expect = 0.040
Identities = 13/50 (26%), Positives = 32/50 (64%)
Query: 24 AKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
A +++ ++ E+S+ KG+++TL+ + +W++ + R+G P YV++
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQGFVPAAYVKK 53
Score = 27.8 bits (62), Expect = 0.58
Identities = 14/53 (26%), Positives = 30/53 (56%), Gaps = 4/53 (7%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD-DGWYVGSSQRSGCFGTFPGNYVER 152
ALY+Y+ ++ E+ +++G+ + ++ + D W V + R G P YV++
Sbjct: 4 ALYDYQEKSPREVSMKKGDILTLLNSSNKDWWKVEVNDRQ---GFVPAAYVKK 53
>gnl|CDD|212794 cd11860, SH3_DLG5, Src homology 3 domain of Disks Large homolog
5. DLG5 is a multifunctional scaffold protein that is
located at sites of cell-cell contact and is involved
in the maintenance of cell shape and polarity.
Mutations in the DLG5 gene are associated with Crohn's
disease (CD) and inflammatory bowel disease (IBD). DLG5
is a member of the MAGUK (membrane-associated guanylate
kinase) protein family, which is characterized by the
presence of a core of three domains: PDZ, SH3, and
guanylate kinase (GuK). The GuK domain in MAGUK
proteins is enzymatically inactive; instead, the domain
mediates protein-protein interactions and associates
intramolecularly with the SH3 domain. DLG5 contains 4
PDZ domains as well as an N-terminal domain of unknown
function. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 63
Score = 31.2 bits (71), Expect = 0.045
Identities = 15/41 (36%), Positives = 20/41 (48%), Gaps = 4/41 (9%)
Query: 23 RAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRR 63
RA F+ A+ ELS K +++ VDN F G G R
Sbjct: 3 RALFDRSAENEDELSFKKDDIL----YVDNTMFNGVFGQWR 39
>gnl|CDD|212934 cd12001, SH3_BCAR1, Src homology 3 domain of the CAS
(Crk-Associated Substrate) scaffolding protein family
member, Breast Cancer Anti-estrogen Resistance 1.
BCAR1, also called p130cas or CASS1, is the founding
member of the CAS family of scaffolding proteins and was
originally identified through its ability to associate
with Crk. The name BCAR1 was designated because the
human gene was identified in a screen for genes that
promote resistance to tamoxifen. It is widely expressed
and its deletion is lethal in mice. It plays a role in
regulating cell motility, survival, proliferation,
transformation, cancer progression, and bacterial
pathogenesis. CAS proteins function as molecular
scaffolds to regulate protein complexes that are
involved in many cellular processes. They share a common
domain structure that includes an N-terminal SH3 domain,
an unstructured substrate domain that contains many YxxP
motifs, a serine-rich four-helix bundle, and a FAT-like
C-terminal domain. The SH3 domain of CAS proteins binds
to diverse partners including FAK, FRNK, Pyk2, PTP-PEST,
DOCK180, among others. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 68
Score = 31.5 bits (71), Expect = 0.047
Identities = 19/51 (37%), Positives = 29/51 (56%), Gaps = 5/51 (9%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD---DGWYVGSSQRSGCFGTFPGN 148
ALY+ ++ DEL R+G+ + V+E+ DGW++ S G G PGN
Sbjct: 7 ALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLH--GRQGIVPGN 55
Score = 27.3 bits (60), Expect = 1.5
Identities = 16/49 (32%), Positives = 30/49 (61%), Gaps = 3/49 (6%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVD---NNWFEGRIGTRRGIFP 67
A+A ++ VA++ ELS KG+++T++ R + W+ + R+GI P
Sbjct: 5 AKALYDNVAESPDELSFRKGDIMTVLERDTQGLDGWWLCSLHGRQGIVP 53
>gnl|CDD|212954 cd12021, SH3_p47phox_1, First or N-terminal Src homology 3 domain
of the p47phox subunit of NADPH oxidase, also called
Neutrophil Cytosolic Factor 1. p47phox, or NCF1, is a
cytosolic subunit of the phagocytic NADPH oxidase
complex (also called Nox2 or gp91phox), which plays a
key role in the ability of phagocytes to defend against
bacterial infections. NADPH oxidase catalyzes the
transfer of electrons from NADPH to oxygen during
phagocytosis forming superoxide and reactive oxygen
species. p47phox is required for activation of NADH
oxidase and plays a role in translocation. It contains
an N-terminal Phox homology (PX) domain, tandem SH3
domains (N-SH3 and C-SH3), a polybasic/autoinhibitory
region, and a C-terminal proline-rich region (PRR). This
model characterizes the first SH3 domain (or N-SH3) of
p47phox. In its inactive state, the tandem SH3 domains
interact intramolecularly with the autoinhibitory
region; upon activation, the tandem SH3 domains are
exposed through a conformational change, resulting in
their binding to the PRR of p22phox and the activation
of NADPH oxidase. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 53
Score = 30.7 bits (69), Expect = 0.069
Identities = 17/53 (32%), Positives = 30/53 (56%), Gaps = 2/53 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
Y A+ +Y+ + E+ L+ G+ V V+EK ++GW+ Q G P +Y+E
Sbjct: 2 YRAIADYEKSSKSEMALKTGDVVEVVEKSENGWWF--CQLKAKRGWVPASYLE 52
Score = 29.9 bits (67), Expect = 0.098
Identities = 11/38 (28%), Positives = 25/38 (65%)
Query: 35 ELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
E++L G++V ++ + +N W+ ++ +RG P +Y+E
Sbjct: 15 EMALKTGDVVEVVEKSENGWWFCQLKAKRGWVPASYLE 52
>gnl|CDD|212722 cd11788, SH3_RasGAP, Src Homology 3 domain of Ras GTPase-Activating
Protein 1. RasGAP, also called Ras p21 protein
activator, RASA1, or p120RasGAP, is part of the GAP1
family of GTPase-activating proteins. It is a 120kD
cytosolic protein containing an SH3 domain flanked by
two SH2 domains at the N-terminal end, a pleckstrin
homology (PH) domain, a calcium dependent phospholipid
binding domain (CaLB/C2), and a C-terminal catalytic GAP
domain. It stimulates the GTPase activity of normal RAS
p21. It acts as a positive effector of Ras in tumor
cells. It also functions as a regulator downstream of
tyrosine receptors such as those of PDGF, EGF, ephrin,
and insulin, among others. The SH3 domain of RasGAP is
unable to bind proline-rich sequences but have been
shown to interact with protein partners such as the G3BP
protein, Aurora kinases, and the Calpain small subunit
1. The RasGAP SH3 domain is necessary for the downstream
signaling of Ras and it also influences Rho-mediated
cytoskeletal reorganization. SH3 domains are protein
interaction domains that typically bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 59
Score = 30.4 bits (69), Expect = 0.072
Identities = 17/49 (34%), Positives = 25/49 (51%), Gaps = 1/49 (2%)
Query: 103 YNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
YN P D EL ++G+ V + +DGW +S R+G G + VE
Sbjct: 10 YNKVPDTD-ELSFQKGDIFVVHNELEDGWLWVTSLRTGESGLVFRDLVE 57
>gnl|CDD|212780 cd11846, SH3_Srms, Src homology 3 domain of Srms Protein Tyrosine
Kinase. Src-related kinase lacking C-terminal
regulatory tyrosine and N-terminal myristoylation sites
(Srms) is a cytoplasmic (or non-receptor) PTK with
limited homology to Src kinases. Src kinases in general
contain an N-terminal SH4 domain with a myristoylation
site, followed by SH3 and SH2 domains, a tyr kinase
domain, and a regulatory C-terminal region containing a
conserved tyr; they are activated by autophosphorylation
at the tyr kinase domain, but are negatively regulated
by phosphorylation at the C-terminal tyr by Csk
(C-terminal Src Kinase). However, Srms lacks the
N-terminal myristoylation sites. Src proteins are
involved in signaling pathways that regulate cytokine
and growth factor responses, cytoskeleton dynamics, cell
proliferation, survival, and differentiation. The SH3
domain of Src kinases contributes to substrate
recruitment by binding adaptor proteins/substrates, and
regulation of kinase activity through an intramolecular
interaction. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 30.5 bits (69), Expect = 0.073
Identities = 15/54 (27%), Positives = 32/54 (59%), Gaps = 4/54 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCF--GTFPGNYV 150
+ ALY++ ++ EL + +G+ + V+E ++G Y+ + + +G G P +YV
Sbjct: 2 FTALYDFTARSTHELSVEQGDKLCVIE--EEGDYIFARKLTGNPESGLVPASYV 53
>gnl|CDD|212836 cd11903, SH3_Nck2_3, Third Src Homology 3 domain of Nck2 adaptor
protein. Nck2 (also called Nckbeta or Growth factor
receptor-bound protein 4, Grb4) plays a crucial role in
connecting signaling pathways of tyrosine kinase
receptors and important effectors in actin dynamics and
cytoskeletal remodeling. It binds neuronal signaling
proteins such as ephrinB and Disabled-1 (Dab-1)
exclusively. Nck adaptor proteins regulate actin
cytoskeleton dynamics by linking proline-rich effector
molecules to protein tyrosine kinases and phosphorylated
signaling intermediates. They contain three SH3 domains
and a C-terminal SH2 domain. They function downstream of
the PDGFbeta receptor and are involved in Rho GTPase
signaling and actin dynamics. Vertebrates contain two
Nck adaptor proteins: Nck1 (also called Nckalpha) and
Nck2, which show partly overlapping functions but also
bind distinct targets. The third SH3 domain of Nck
appears to prefer ligands with a PxAPxR motif. SH3
domains are protein interaction domains that usually
bind to proline-rich ligands with moderate affinity and
selectivity, preferentially a PxxP motif. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 30.4 bits (68), Expect = 0.076
Identities = 18/51 (35%), Positives = 28/51 (54%), Gaps = 3/51 (5%)
Query: 102 LYNYKPQNDDELELREGETVFVMEKCDDG--WYVGSSQRSGCFGTFPGNYV 150
LY + ++EL +GET+ V+EK ++ W+ + R G G P NYV
Sbjct: 6 LYPFSSVTEEELNFEKGETMEVIEKPENDPEWWKCKNSR-GQVGLVPKNYV 55
>gnl|CDD|213017 cd12141, SH3_DNMBP_C2, Second C-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba, and similar
domains. DNMBP or Tuba is a cdc42-specific guanine
nucleotide exchange factor (GEF) that contains four
N-terminal SH3 domains, a central RhoGEF [or Dbl
homology (DH)] domain followed by a Bin/Amphiphysin/Rvs
(BAR) domain, and two C-terminal SH3 domains. It
provides a functional link between dynamin, Rho GTPase
signaling, and actin dynamics. It plays an important
role in regulating cell junction configuration. The
C-terminal SH3 domains of DNMBP bind to N-WASP and
Ena/VASP proteins, which are key regulatory proteins of
the actin cytoskeleton. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 30.5 bits (69), Expect = 0.079
Identities = 15/58 (25%), Positives = 30/58 (51%), Gaps = 6/58 (10%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDG----WYVGSSQRSGCFGTFPGNYVER 152
Y+A+Y +K ++ +EL + + V ++E D W++ + G G P NY+ +
Sbjct: 2 YYAVYTFKARSPNELSVSANQRVRILEFSDLTGNKEWWLAEAN--GQKGYVPSNYIRK 57
>gnl|CDD|212982 cd12049, SH3_DOCK4_B, Src Homology 3 domain of Class B Dedicator of
Cytokinesis 4. Dock4 is a class B DOCK and is an
atypical guanine nucleotide exchange factor (GEF) that
lacks the conventional Dbl homology (DH) domain. It
plays a role in regulating dendritic growth and
branching in hippocampal neurons, where it is highly
expressed. It may also regulate spine morphology and
synapse formation. Dock4 activates the Ras family GTPase
Rap1, probably indirectly through interaction with Rap
regulatory proteins. All DOCKs contain two homology
domains: the DHR-1 (Dock homology region-1), also called
CZH1 (CED-5, Dock180, and MBC-zizimin homology 1), and
DHR-2 (also called CZH2 or Docker). The DHR-1 domain
binds phosphatidylinositol-3,4,5-triphosphate while
DHR-2 contains the catalytic activity for Rac and/or
Cdc42. Class B DOCKs also contain an SH3 domain at the
N-terminal region and a PxxP motif at the C-terminus.
The SH3 domain of Dock4 binds to DHR-2 in an
autoinhibitory manner; binding of the scaffold protein
Elmo to the SH3 domain of Dock4 exposes the DHR-2 domain
and promotes GEF activity. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 56
Score = 30.2 bits (68), Expect = 0.081
Identities = 16/40 (40%), Positives = 24/40 (60%), Gaps = 2/40 (5%)
Query: 113 LELREGETVFVMEKCDDGWYVGSSQRS-GCFGTFPGNYVE 151
L L G+TV ++EKC +GWY G + ++ G FP Y+
Sbjct: 16 LTLEIGDTVQILEKC-EGWYRGFALKNPNVKGIFPQLYLH 54
>gnl|CDD|212923 cd11990, SH3_Intersectin2_2, Second Src homology 3 domain (or
SH3B) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The second SH3 domain (or SH3B) of ITSN2 is
expected to bind protein partners, similar to ITSN1
which has been shown to bind WNK and CdGAP. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 30.4 bits (68), Expect = 0.081
Identities = 16/52 (30%), Positives = 32/52 (61%), Gaps = 1/52 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A+A ++ A+ L+ K +++T++ + +N WF G + RG FP +YV+
Sbjct: 1 KAQALCSWTAKKDNHLNFSKNDIITVLEQQENWWF-GEVHGGRGWFPKSYVK 51
>gnl|CDD|212927 cd11994, SH3_Intersectin2_4, Fourth Src homology 3 domain (or
SH3D) of Intersectin-2. Intersectin-2 (ITSN2) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN2 also functions as a
specific GEF for Cdc42 activation in epithelial
morphogenesis, and is required in mitotic spindle
orientation. It exists in alternatively spliced short
and long isoforms. The short isoform contains two Eps15
homology domains (EH1 and EH2), a coiled-coil region
and five SH3 domains (SH3A-E), while the long isoform,
in addition, contains RhoGEF (also called
Dbl-homologous or DH), Pleckstrin homology (PH) and C2
domains. The fourth SH3 domain (or SH3D) of ITSN2 is
expected to bind protein partners, similar to ITSN1
which has been shown to bind SHIP2, Numb, CdGAP, and
N-WASP. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 59
Score = 30.3 bits (68), Expect = 0.082
Identities = 15/56 (26%), Positives = 31/56 (55%), Gaps = 5/56 (8%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTR-----RGIFPVTYVE 72
A+ +VA +LSL G+L+ ++++ + W+ G + R +G FP ++V+
Sbjct: 2 AQVTTAYVASGVEQLSLSPGQLILILKKNSSGWWLGELQARGKKRQKGWFPASHVK 57
>gnl|CDD|212841 cd11908, SH3_ITK, Src Homology 3 domain of Interleukin-2-inducible
T-cell Kinase. ITK (also known as Tsk or Emt) is a
cytoplasmic (or nonreceptor) tyr kinase containing Src
homology protein interaction domains (SH3, SH2)
N-terminal to the catalytic tyr kinase domain. It also
contains an N-terminal pleckstrin homology (PH) domain,
which binds the products of PI3K and allows membrane
recruitment and activation, and the Tec homology (TH)
domain, which contains proline-rich and zinc-binding
regions. ITK is expressed in T-cells and mast cells, and
is important in their development and differentiation.
Of the three Tec kinases expressed in T-cells, ITK plays
the predominant role in T-cell receptor (TCR) signaling.
It is activated by phosphorylation upon TCR crosslinking
and is involved in the pathway resulting in
phospholipase C-gamma1 activation and actin
polymerization. It also plays a role in the downstream
signaling of the T-cell costimulatory receptor CD28, the
T-cell surface receptor CD2, and the chemokine receptor
CXCR4. In addition, ITK is crucial for the development
of T-helper(Th)2 effector responses. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 56
Score = 30.4 bits (68), Expect = 0.083
Identities = 14/50 (28%), Positives = 26/50 (52%), Gaps = 1/50 (2%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
ALY+Y+ + EL LR E +++ + W+ ++G G P +Y+
Sbjct: 5 ALYDYQTNDPQELALRYNEEYHLLDSSEIHWWR-VQDKNGHEGYVPSSYL 53
>gnl|CDD|212908 cd11975, SH3_ARHGEF9, Src homology 3 domain of the Rho guanine
nucleotide exchange factor ARHGEF9. ARHGEF9, also
called PEM2 or collybistin, selectively activates Cdc42
by exchanging bound GDP for free GTP. It is highly
expressed in the brain and it interacts with gephyrin,
a postsynaptic protein associated with GABA and glycine
receptors. Mutations in the ARHGEF9 gene cause X-linked
mental retardation with associated features like
seizures, hyper-anxiety, aggressive behavior, and
sensory hyperarousal. ARHGEF9 contains a SH3 domain
followed by RhoGEF (also called Dbl-homologous or DH)
and Pleckstrin Homology (PH) domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 62
Score = 30.4 bits (68), Expect = 0.097
Identities = 13/50 (26%), Positives = 28/50 (56%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A A ++ V + EL+ G+++ ++ + +W+ G+I G FP ++V
Sbjct: 7 AEAVWDHVTMANRELAFKAGDVIKVLDASNKDWWWGQIDDEEGWFPASFV 56
>gnl|CDD|213016 cd12140, SH3_Amphiphysin_I, Src Homology 3 domain of Amphiphysin I.
Amphiphysins function primarily in endocytosis and
other membrane remodeling events. They exist in several
isoforms and mammals possess two amphiphysin proteins
from distinct genes. Amphiphysin I proteins, enriched in
the brain and nervous system, contain domains that bind
clathrin, Adaptor Protein complex 2 (AP2), dynamin, and
synaptojanin. They function in synaptic vesicle
endocytosis. Human autoantibodies to amphiphysin I
hinder GABAergic signaling and contribute to the
pathogenesis of paraneoplastic stiff-person syndrome.
Amphiphysins contain an N-terminal BAR domain with an
additional N-terminal amphipathic helix (an N-BAR), a
variable central domain, and a C-terminal SH3 domain.
The SH3 domain of amphiphysins bind proline-rich motifs
present in binding partners such as dynamin,
synaptojanin, and nsP3. It also belongs to a subset of
SH3 domains that bind ubiquitin in a site that overlaps
with the peptide binding site. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 72
Score = 30.6 bits (69), Expect = 0.10
Identities = 20/64 (31%), Positives = 29/64 (45%), Gaps = 13/64 (20%)
Query: 102 LYNYKPQNDDELELREGETVFVM-----EKCDDGWYVGSSQR--------SGCFGTFPGN 148
L++++ N DELEL+ G+ V V+ D GW G + S G FP N
Sbjct: 8 LHDFEAANSDELELKRGDIVLVVPSETAADQDAGWLTGVKESDWLQYRDASAYKGLFPEN 67
Query: 149 YVER 152
+ R
Sbjct: 68 FTRR 71
>gnl|CDD|213008 cd12075, SH3_Tks4_1, First Src homology 3 domain of Tyrosine kinase
substrate with four SH3 domains. Tks4, also called SH3
and PX domain-containing protein 2B (SH3PXD2B) or HOFI,
is a Src substrate and scaffolding protein that plays an
important role in the formation of podosomes and
invadopodia, the dynamic actin-rich structures that are
related to cell migration and cancer cell invasion. It
is required in the formation of functional podosomes,
EGF-induced membrane ruffling, and lamellipodia
generation. It plays an important role in cellular
attachment and cell spreading. Tks4 is essential for the
localization of MT1-MMP (membrane-type 1 matrix
metalloproteinase) to invadopodia. It contains an
N-terminal Phox homology (PX) domain and four SH3
domains. This model characterizes the first SH3 domain
of Tks4. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 30.0 bits (67), Expect = 0.11
Identities = 14/43 (32%), Positives = 24/43 (55%), Gaps = 1/43 (2%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDG-WYVGSSQRSG 140
Y + NY+ Q E+ L G+ V ++EK + G W+V ++ G
Sbjct: 3 YVVVANYQKQESSEISLYVGQVVDIIEKNESGWWFVSTADEQG 45
Score = 26.6 bits (58), Expect = 2.0
Identities = 14/48 (29%), Positives = 25/48 (52%)
Query: 27 NFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQQ 74
N+ Q E+SL G++V +I + ++ W+ +G P T +E Q
Sbjct: 8 NYQKQESSEISLYVGQVVDIIEKNESGWWFVSTADEQGWVPATCLEAQ 55
>gnl|CDD|212711 cd11777, SH3_CIP4_Bzz1_like, Src Homology 3 domain of
Cdc42-Interacting Protein 4, Bzz1 and similar domains.
This subfamily is composed of Cdc42-Interacting Protein
4 (CIP4) and similar proteins such as Formin Binding
Protein 17 (FBP17) and FormiN Binding Protein 1-Like
(FNBP1L), as well as yeast Bzz1 (or Bzz1p). CIP4 and
FNBP1L are Cdc42 effectors that bind Wiskott-Aldrich
syndrome protein (WASP) and function in endocytosis.
CIP4 and FBP17 bind to the Fas ligand and may be
implicated in the inflammatory response. CIP4 may also
play a role in phagocytosis. Bzz1 is also a
WASP/Las17-interacting protein involved in endocytosis
and trafficking to the vacuole. It physically interacts
with type I myosins and functions in the early steps of
endocytosis. Members of this subfamily contain an
N-terminal F-BAR (FES-CIP4 Homology and
Bin/Amphiphysin/Rvs) domain as well as at least one
C-terminal SH3 domain. Bzz1 contains a second SH3 domain
at the C-terminus. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 29.5 bits (66), Expect = 0.16
Identities = 10/32 (31%), Positives = 19/32 (59%), Gaps = 1/32 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEK-CDDGW 131
ALY + ++ + + EGE + ++E+ DGW
Sbjct: 4 ALYAFVGSSEGTISMTEGEKLSLVEEDKGDGW 35
>gnl|CDD|212916 cd11983, SH3_Shank2, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 2. Shank2, also called
ProSAP1 (Proline-rich synapse-associated protein 1) or
CortBP1 (Cortactin-binding protein 1), is found in
neurons, glia, endocrine cells, liver, and kidney. It
plays a role in regulating dendritic spine volume and
branching and postsynaptic clustering. Mutations in the
Shank2 gene are associated with autism spectrum disorder
and mental retardation. Shank proteins carry scaffolding
functions through multiple sites of protein-protein
interaction in its domain architecture, including
ankyrin (ANK) repeats, a long proline rich region, as
well as SH3, PDZ, and SAM domains. The SH3 domain of
Shank binds GRIP, a scaffold protein that binds AMPA
receptors and Eph receptors/ligands. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 52
Score = 29.5 bits (66), Expect = 0.16
Identities = 16/52 (30%), Positives = 30/52 (57%), Gaps = 2/52 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
+ + +Y+PQ + E+ L +G+ V V+ + G++ GS++ G G FP V
Sbjct: 3 FVVVKSYQPQVEGEIPLHKGDRVKVLSIGEGGFWEGSAR--GHVGWFPAECV 52
>gnl|CDD|212933 cd12000, SH3_CASS4, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member 4. CASS4,
also called HEPL (HEF1-EFS-p130Cas-like), localizes to
focal adhesions and plays a role in regulating FAK
activity, focal adhesion integrity, and cell spreading.
It is most abundant in blood cells and lung tissue, and
is also found in high levels in leukemia and ovarian
cell lines. CAS proteins function as molecular scaffolds
to regulate protein complexes that are involved in many
cellular processes. They share a common domain structure
that includes an N-terminal SH3 domain, an unstructured
substrate domain that contains many YxxP motifs, a
serine-rich four-helix bundle, and a FAT-like C-terminal
domain. The SH3 domain of CAS proteins binds to diverse
partners including FAK, FRNK, Pyk2, PTP-PEST, DOCK180,
among others. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP motifs.
They play versatile and diverse roles in the cell
including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 29.5 bits (66), Expect = 0.18
Identities = 13/35 (37%), Positives = 20/35 (57%), Gaps = 3/35 (8%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKC---DDGWY 132
ALY+ K DEL R G+ + V+E+ +GW+
Sbjct: 5 ALYDNKADCSDELAFRRGDILTVLEQNVPGSEGWW 39
>gnl|CDD|212821 cd11888, SH3_ARHGAP9_like, Src Homology 3 domain of Rho
GTPase-activating protein 9 and similar proteins. This
subfamily is composed of Rho GTPase-activating proteins
including mammalian ARHGAP9, and vertebrate ARHGAPs 12
and 27. RhoGAPs (or ARHGAPs) bind to Rho proteins and
enhance the hydrolysis rates of bound GTP. ARHGAP9
functions as a GAP for Rac and Cdc42, but not for RhoA.
It negatively regulates cell migration and adhesion. It
also acts as a docking protein for the MAP kinases Erk2
and p38alpha, and may facilitate cross-talk between the
Rho GTPase and MAPK pathways to control actin
remodeling. ARHGAP27, also called CAMGAP1, shows GAP
activity towards Rac1 and Cdc42. It binds the adaptor
protein CIN85 and may play a role in clathrin-mediated
endocytosis. ARHGAP12 has been shown to display GAP
activity towards Rac1. It plays a role in regulating
HFG-driven cell growth and invasiveness. ARHGAPs in this
subfamily contain SH3, WW, Pleckstin homology (PH), and
RhoGAP domains. SH3 domains bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 54
Score = 29.3 bits (66), Expect = 0.18
Identities = 14/50 (28%), Positives = 25/50 (50%), Gaps = 6/50 (12%)
Query: 103 YNYKPQNDDELELREGETVFVMEKC-DDGWYVGSSQRSGCFGTF--PGNY 149
+ Y ++ ++ ++EGE +++K DD W V +R G F P Y
Sbjct: 8 FEYTGKDGRKVSIKEGERFLLLKKSNDDWWQV---RRPGDSKPFYVPAQY 54
>gnl|CDD|212784 cd11850, SH3_Abl, Src homology 3 domain of the Protein Tyrosine
Kinase, Abelson kinase. Abl (or c-Abl) is a
ubiquitously-expressed cytoplasmic (or nonreceptor) PTK
that contains SH3, SH2, and tyr kinase domains in its
N-terminal region, as well as nuclear localization
motifs, a putative DNA-binding domain, and F- and
G-actin binding domains in its C-terminal tail. It also
contains a short autoinhibitory cap region in its
N-terminus. Abl function depends on its subcellular
localization. In the cytoplasm, Abl plays a role in cell
proliferation and survival. In response to DNA damage or
oxidative stress, Abl is transported to the nucleus
where it induces apoptosis. In chronic myelogenous
leukemia (CML) patients, an aberrant translocation
results in the replacement of the first exon of Abl with
the BCR (breakpoint cluster region) gene. The resulting
BCR-Abl fusion protein is constitutively active and
associates into tetramers, resulting in a hyperactive
kinase sending a continuous signal. This leads to
uncontrolled proliferation, morphological transformation
and anti-apoptotic effects. BCR-Abl is the target of
selective inhibitors, such as imatinib (Gleevec), used
in the treatment of CML. Abl2, also known as ARG
(Abelson-related gene), is thought to play a cooperative
role with Abl in the proper development of the nervous
system. The Tel-ARG fusion protein, resulting from
reciprocal translocation between chromosomes 1 and 12,
is associated with acute myeloid leukemia (AML). SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 56
Score = 29.3 bits (66), Expect = 0.20
Identities = 15/53 (28%), Positives = 29/53 (54%), Gaps = 1/53 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDG-WYVGSSQRSGCFGTFPGNYVER 152
ALY++ +++L +++GE + V+ +G W S+ +G G P NY+
Sbjct: 4 ALYDFVASGENQLSIKKGEQLRVLGYNKNGEWCEAESKSTGGQGWVPSNYITP 56
>gnl|CDD|212907 cd11974, SH3_ASEF2, Src homology 3 domain of APC-Stimulated
guanine nucleotide Exchange Factor 2. ASEF2, also
called Spermatogenesis-associated protein 13 (SPATA13),
is a GEF that localizes with actin at the leading edge
of cells and is important in cell migration and
adhesion dynamics. GEFs activate small GTPases by
exchanging bound GDP for free GTP. ASEF2 can activate
both Rac 1 and Cdc42, but only Rac1 activation is
necessary for increased cell migration and adhesion
turnover. Together with APC (adenomatous polyposis
coli) and Neurabin2, a scaffold protein that binds
F-actin, it is involved in regulating HGF-induced cell
migration. ASEF2 contains a SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 54
Score = 29.3 bits (65), Expect = 0.20
Identities = 13/50 (26%), Positives = 26/50 (52%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A A ++ V EL+ G+++ ++ + +W+ GR R FP ++V
Sbjct: 3 AEALWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAWFPASFV 52
Score = 26.2 bits (57), Expect = 2.3
Identities = 13/50 (26%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
AL+++ +D EL + G+ + V+E + W+ G ++ + FP ++V
Sbjct: 5 ALWDHVTMDDQELAFKAGDVIRVLEASNKDWWWGRNEDREAW--FPASFV 52
>gnl|CDD|212729 cd11795, SH3_DNMBP_N2, Second N-terminal Src homology 3 domain of
Dynamin Binding Protein, also called Tuba. DNMBP or
Tuba is a cdc42-specific guanine nucleotide exchange
factor (GEF) that contains four N-terminal SH3 domains,
a central RhoGEF [or Dbl homology (DH)] domain followed
by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. It provides a functional link
between dynamin and key regulatory proteins of the actin
cytoskeleton. It plays an important role in regulating
cell junction configuration. The four N-terminal SH3
domains of DNMBP binds the GTPase dynamin, which plays
an important role in the fission of endocytic vesicles.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 29.0 bits (65), Expect = 0.22
Identities = 15/47 (31%), Positives = 21/47 (44%), Gaps = 1/47 (2%)
Query: 105 YKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
+ Q L L+ G+ V + D GW G S G G FP + V+
Sbjct: 8 FTSQEPGHLNLQRGDLVELTGTTDSGWLQGRS-CWGSSGFFPSSCVQ 53
Score = 25.1 bits (55), Expect = 6.0
Identities = 16/47 (34%), Positives = 25/47 (53%), Gaps = 1/47 (2%)
Query: 28 FVAQTHLELSLVKGELVTLIRRVDNNWFEGRI-GTRRGIFPVTYVEQ 73
F +Q L+L +G+LV L D+ W +GR G FP + V++
Sbjct: 8 FTSQEPGHLNLQRGDLVELTGTTDSGWLQGRSCWGSSGFFPSSCVQE 54
>gnl|CDD|212782 cd11848, SH3_SLAP-like, Src homology 3 domain of Src-Like Adaptor
Proteins. SLAPs are adaptor proteins with limited
similarity to Src family tyrosine kinases. They contain
an N-terminal SH3 domain followed by an SH2 domain, and
a unique C-terminal sequence. They function in
regulating the signaling, ubiquitination, and
trafficking of T-cell receptor (TCR) and B-cell receptor
(BCR) components. Vertebrates contain two SLAPs, named
SLAP (or SLA1) and SLAP2 (or SLA2). SLAP has been shown
to interact with the EphA receptor, EpoR, Lck, PDGFR,
Syk, CD79a, among others, while SLAP2 interacts with
CSF1R. Both SLAPs interact with c-Cbl, LAT, CD247, and
Zap70. SLAP modulates TCR surface expression levels as
well as surface and total BCR levels. As an adaptor to
c-Cbl, SLAP increases the ubiquitination, intracellular
retention, and targeted degradation of the BCR complex
components. SLAP2 plays a role in c-Cbl-dependent
regulation of CSF1R, a tyrosine kinase important for
myeloid cell growth and differentiation. The SH3 domain
of SLAP forms a complex with v-Abl. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 55
Score = 29.1 bits (65), Expect = 0.22
Identities = 14/52 (26%), Positives = 24/52 (46%), Gaps = 1/52 (1%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
AL +Y EL LR GE + ++ + W+ S+ +G P +V +
Sbjct: 4 ALGDYPSGGPAELSLRLGEPLTIVSD-EGDWWKVLSEVTGRESYIPSVHVAK 54
>gnl|CDD|212798 cd11864, SH3_PEX13_eumet, Src Homology 3 domain of eumetazoan
Peroxisomal biogenesis factor 13. PEX13 is a peroxin
and is required for protein import into the peroxisomal
matrix and membrane. It is an integral membrane protein
that is essential for the localization of PEX14 and the
import of proteins containing the peroxisome matrix
targeting signals, PTS1 and PTS2. Mutations of the
PEX13 gene in humans lead to a wide range of peroxisome
biogenesis disorders (PBDs), the most severe of which
is known as Zellweger syndrome (ZS), a severe
multisystem disorder characterized by hypotonia,
psychomotor retardation, and neuronal migration
defects. PEX13 contains two transmembrane regions and a
C-terminal SH3 domain. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles
in the cell including the regulation of enzymes,
changing the subcellular localization of signaling
pathway components, and mediating the formation of
multiprotein complex assemblies.
Length = 58
Score = 29.1 bits (66), Expect = 0.23
Identities = 18/57 (31%), Positives = 28/57 (49%), Gaps = 5/57 (8%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLI-----RRVDNNWFEGRIGTRRGIFPVTYVE 72
ARA+++FVA++ ELS G+ + L RV G + G+ P YV+
Sbjct: 1 VARAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLATVDGQKIGLVPANYVK 57
Score = 28.0 bits (63), Expect = 0.52
Identities = 16/58 (27%), Positives = 28/58 (48%), Gaps = 9/58 (15%)
Query: 100 HALYNYKPQNDDELELREGETVFVMEKCDD----GWYVGSS--QRSGCFGTFPGNYVE 151
A Y++ +++DEL R G+ + + K GW + + Q+ G P NYV+
Sbjct: 3 RAEYDFVAESEDELSFRAGDKLRLAPKELQPRVRGWLLATVDGQKI---GLVPANYVK 57
>gnl|CDD|212906 cd11973, SH3_ASEF, Src homology 3 domain of APC-Stimulated
guanine nucleotide Exchange Factor. ASEF, also called
ARHGEF4, exists in an autoinhibited form and is
activated upon binding of the tumor suppressor APC
(adenomatous polyposis coli). GEFs activate small
GTPases by exchanging bound GDP for free GTP. ASEF can
activate Rac1 or Cdc42. Truncated ASEF, which is found
in colorectal cancers, is constitutively active and has
been shown to promote angiogenesis and cancer cell
migration. ASEF contains a SH3 domain followed by
RhoGEF (also called Dbl-homologous or DH) and
Pleckstrin Homology (PH) domains. In its autoinhibited
form, the SH3 domain of ASEF forms an extensive
interface with the DH and PH domains, blocking the Rac
binding site. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 73
Score = 29.6 bits (66), Expect = 0.24
Identities = 13/50 (26%), Positives = 25/50 (50%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYV 71
A A ++ V EL G+++ ++ + W+ GR+ G FP ++V
Sbjct: 20 AEALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSEGWFPASFV 69
Score = 27.7 bits (61), Expect = 1.0
Identities = 15/50 (30%), Positives = 27/50 (54%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
AL+++ +D EL + G+ + VM+ + W+ G S G FP ++V
Sbjct: 22 ALWDHVTMDDQELGFKAGDVIEVMDATNKEWWWGRVLDSE--GWFPASFV 69
>gnl|CDD|212917 cd11984, SH3_Shank3, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 3. Shank3, also called
ProSAP2 (Proline-rich synapse-associated protein 2), is
widely expressed. It plays a role in the formation of
dendritic spines and synapses. Haploinsufficiency of the
Shank3 gene causes the 22q13 deletion/Phelan-McDermid
syndrome, and variants of Shank3 have been implicated in
autism spectrum disorder, schizophrenia, and
intellectual disability. Shank proteins carry
scaffolding functions through multiple sites of
protein-protein interaction in its domain architecture,
including ankyrin (ANK) repeats, a long proline rich
region, as well as SH3, PDZ, and SAM domains. The SH3
domain of Shank binds GRIP, a scaffold protein that
binds AMPA receptors and Eph receptors/ligands. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 28.8 bits (64), Expect = 0.25
Identities = 17/50 (34%), Positives = 28/50 (56%), Gaps = 2/50 (4%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYV 150
A+ Y PQ + E++L GE V V+ + G++ G+ + G G FP + V
Sbjct: 5 AVKAYSPQGEGEIQLNRGERVKVLSIGEGGFWEGTVK--GRTGWFPADCV 52
>gnl|CDD|212977 cd12044, SH3_SKAP1, Src Homology 3 domain of Src Kinase-Associated
Phosphoprotein 1. SKAP1, also called SKAP55 (Src
kinase-associated protein of 55kDa), is an immune
cell-specific adaptor protein that plays an important
role in T-cell adhesion, migration, and integrin
clustering. It is expressed exclusively in
T-lymphocytes, mast cells, and macrophages. Binding
partners include ADAP (adhesion and
degranulation-promoting adaptor protein), Fyn, Riam,
RapL, and RasGRP. It contains a pleckstrin homology (PH)
domain, a C-terminal SH3 domain, and several tyrosine
phosphorylation sites. The SH3 domain of SKAP1 is
necessary for its ability to regulate T-cell conjugation
with antigen-presenting cells and the formation of LFA-1
clusters. SKAP1 binds primarily to a proline-rich region
of ADAP through its SH3 domain; its degradation is
regulated by ADAP. A secondary interaction occurs via
the ADAP SH3 domain and the RKxxYxxY motif in SKAP1. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 28.7 bits (64), Expect = 0.29
Identities = 16/54 (29%), Positives = 30/54 (55%), Gaps = 4/54 (7%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDD--GWYVGSSQRSGCFGTFPGNYV 150
Y L++ N DEL + G+ ++++ K + GW+VG + +G G P +Y+
Sbjct: 2 YQGLWDCFGDNPDELSFQRGDLIYILSKEYNMYGWWVG--ELNGIVGIVPKDYL 53
>gnl|CDD|212998 cd12065, SH3_GRAF2, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase 2. GRAF2, also
called Rho GTPase activating protein 10 (ARHGAP10) or
PS-GAP, is a GAP with activity towards Cdc42 and RhoA.
It regulates caspase-activated p21-activated protein
kinase-2 (PAK-2p34). GRAF2 interacts with PAK-2p34,
leading to its stabilization and decrease of cell
death. It is highly expressed in skeletal muscle, and
is involved in alpha-catenin recruitment at cell-cell
junctions. GRAF2 contains an N-terminal BAR domain,
followed by a Pleckstrin homology (PH) domain, a Rho
GAP domain, and a C-terminal SH3 domain. The SH3 domain
of GRAF binds PKNbeta, a target of the small GTPase
Rho. SH3 domains bind to proline-rich ligands with
moderate affinity and selectivity, preferentially to
PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 54
Score = 28.8 bits (64), Expect = 0.32
Identities = 21/55 (38%), Positives = 29/55 (52%), Gaps = 5/55 (9%)
Query: 21 QARAKFNFVAQTHLELSLVKG---ELVTLIRRVDNNWFEGRIGTRRGIFPVTYVE 72
+A+A + A+ ELS G E VTL R + W EG + +RG+ P YVE
Sbjct: 1 KAKAVYPCEAEHSSELSFEVGAIFEDVTLSR--EPGWLEGTLNGKRGLIPENYVE 53
>gnl|CDD|212915 cd11982, SH3_Shank1, Src homology 3 domain of SH3 and multiple
ankyrin repeat domains protein 1. Shank1, also called
SSTRIP (Somatostatin receptor-interacting protein), is
a brain-specific protein that plays a role in the
construction of postsynaptic density (PSD) and the
maturation of dendritic spines. Mice deficient in
Shank1 show altered PSD composition, thinner PSDs,
smaller dendritic spines, and weaker basal synaptic
transmission, although synaptic plasticity is normal.
They show increased anxiety and impaired fear memory,
but also show better spatial learning. Shank proteins
carry scaffolding functions through multiple sites of
protein-protein interaction in its domain architecture,
including ankyrin (ANK) repeats, a long proline rich
region, as well as SH3, PDZ, and SAM domains. The SH3
domain of Shank binds GRIP, a scaffold protein that
binds AMPA receptors and Eph receptors/ligands. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 52
Score = 28.4 bits (63), Expect = 0.41
Identities = 13/40 (32%), Positives = 24/40 (60%)
Query: 28 FVAQTHLELSLVKGELVTLIRRVDNNWFEGRIGTRRGIFP 67
+ +Q E+SL KGE + ++ + ++EG++ R G FP
Sbjct: 9 YQSQAEGEISLSKGEKIKVLSVGEGGFWEGQVKGRVGWFP 48
>gnl|CDD|213004 cd12071, SH3_FBP17, Src Homology 3 domain of Formin Binding Protein
17. Formin Binding Protein 17 (FBP17), also called
FormiN Binding Protein 1 (FNBP1), is involved in
dynamin-mediated endocytosis. It is recruited to
clathrin-coated pits late in the endocytosis process and
may play a role in the invagination and scission steps.
FBP17 binds in vivo to tankyrase, a protein involved in
telomere maintenance and mitogen activated protein
kinase (MAPK) signaling. It contains an N-terminal F-BAR
(FES-CIP4 Homology and Bin/Amphiphysin/Rvs) domain, a
Cdc42-binding HR1 domain, and a C-terminal SH3 domain.
The SH3 domain of the related protein, CIP4, associates
with Gapex-5, a Rab31 GEF. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 28.4 bits (63), Expect = 0.42
Identities = 13/32 (40%), Positives = 22/32 (68%), Gaps = 1/32 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD-DGW 131
ALY ++ QN+ + + EGE ++V+E+ DGW
Sbjct: 5 ALYPFEGQNEGTISVAEGEMLYVIEEDKGDGW 36
>gnl|CDD|212944 cd12011, SH3_SLAP2, Src homology 3 domain of Src-Like Adaptor
Protein 2. SLAP2 plays a role in c-Cbl-dependent
regulation of CSF1R, a tyrosine kinase important for
myeloid cell growth and differentiation. It has been
shown to interact with CSF1R, c-Cbl, LAT, CD247, and
Zap70. SLAPs are adaptor proteins with limited
similarity to Src family tyrosine kinases. They contain
an N-terminal SH3 domain followed by an SH2 domain, and
a unique C-terminal sequence. They function in
regulating the signaling, ubiquitination, and
trafficking of T-cell receptor (TCR) and B-cell receptor
(BCR) components. The SH3 domain of SLAP forms a complex
with v-Abl. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 28.2 bits (63), Expect = 0.50
Identities = 18/51 (35%), Positives = 26/51 (50%), Gaps = 3/51 (5%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDG-WYVGSSQRSGCFGTFPGNYV 150
AL N+ EL +R GE + ++ +DG W+ SS +G P NYV
Sbjct: 4 ALCNFPSGGPTELSIRMGEQLTILS--EDGDWWKVSSAVTGRECYIPSNYV 52
>gnl|CDD|212936 cd12003, SH3_EFS, Src homology 3 domain of CAS (Crk-Associated
Substrate) scaffolding protein family member, Embryonal
Fyn-associated Substrate. EFS is also called HEFS,
CASS3 (Cas scaffolding protein family member 3) or SIN
(Src-interacting protein). It was identified based on
interactions with the Src kinases, Fyn and Yes. It plays
a role in thymocyte development and acts as a negative
regulator of T cell proliferation. CAS proteins function
as molecular scaffolds to regulate protein complexes
that are involved in many cellular processes. They share
a common domain structure that includes an N-terminal
SH3 domain, an unstructured substrate domain that
contains many YxxP motifs, a serine-rich four-helix
bundle, and a FAT-like C-terminal domain. The SH3 domain
of CAS proteins binds to diverse partners including FAK,
FRNK, Pyk2, PTP-PEST, DOCK180, among others. SH3 domains
are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 27.9 bits (62), Expect = 0.70
Identities = 15/54 (27%), Positives = 27/54 (50%), Gaps = 5/54 (9%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCD---DGWYVGSSQRSGCFGTFPGNYVE 151
ALY+ ++ +EL R G+ + V+++ GW++ S G G P N +
Sbjct: 5 ALYDNAAESPEELSFRRGDVLMVLKREHGSLPGWWLCSLH--GQQGIAPANRLR 56
>gnl|CDD|212698 cd11764, SH3_Eps8, Src Homology 3 domain of Epidermal growth
factor receptor kinase substrate 8 and similar
proteins. This group is composed of Eps8 and Eps8-like
proteins including Eps8-like 1-3, among others. These
proteins contain N-terminal Phosphotyrosine-binding
(PTB), central SH3, and C-terminal effector domains.
Eps8 binds either Abi1 (also called E3b1) or Rab5
GTPase activating protein RN-tre through its SH3
domain. With Abi1 and Sos1, it becomes part of a
trimeric complex that is required to activate Rac.
Together with RN-tre, it inhibits the internalization
of EGFR. The SH3 domains of Eps8 and similar proteins
recognize peptides containing a PxxDY motif, instead of
the classical PxxP motif. SH3 domains are protein
interaction domains that usually bind to proline-rich
ligands with moderate affinity and selectivity. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 54
Score = 27.6 bits (62), Expect = 0.72
Identities = 12/39 (30%), Positives = 23/39 (58%), Gaps = 5/39 (12%)
Query: 22 ARAKFNFVAQTHLELSLVKGELVTLIRRVDN--NWFEGR 58
R ++F A+ ELS++KGE + ++ D+ W++ R
Sbjct: 2 VRVLYDFTARNSKELSVLKGEYLEVL---DDSRQWWKVR 37
Score = 24.9 bits (55), Expect = 7.3
Identities = 16/53 (30%), Positives = 26/53 (49%), Gaps = 2/53 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
LY++ +N EL + +GE + V++ W V +S G G P N +E
Sbjct: 2 VRVLYDFTARNSKELSVLKGEYLEVLDDSRQWWKVRNS--RGQVGYVPHNILE 52
>gnl|CDD|212874 cd11941, SH3_ARHGEF37_C2, Second C-terminal Src homology 3 domain
of Rho guanine nucleotide exchange factor 37. ARHGEF37
contains a RhoGEF [or Dbl homology (DH)] domain
followed by a Bin/Amphiphysin/Rvs (BAR) domain, and two
C-terminal SH3 domains. Its specific function is
unknown. Its domain architecture is similar to the
C-terminal half of DNMBP or Tuba, a cdc42-specific GEF
that provides a functional link between dynamin, Rho
GTPase signaling, and actin dynamics, and plays an
important role in regulating cell junction
configuration. GEFs activate small GTPases by
exchanging bound GDP for free GTP. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 57
Score = 28.0 bits (62), Expect = 0.73
Identities = 15/55 (27%), Positives = 28/55 (50%), Gaps = 4/55 (7%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLI----RRVDNNWFEGRIGTRRGIFPVTYV 71
Q A + F A++ E+SL G+ VT++ ++ W + +RG P +Y+
Sbjct: 1 QVVAAYPFTARSKHEVSLQAGQPVTVLEPHDKKGSPEWSLVEVNGQRGYVPSSYL 55
>gnl|CDD|212789 cd11855, SH3_Sho1p, Src homology 3 domain of High osmolarity
signaling protein Sho1p. Sho1p (or Sho1), also called
SSU81 (Suppressor of SUA8-1 mutation), is a yeast
membrane protein that regulates adaptation to high salt
conditions by activating the HOG (high-osmolarity
glycerol) pathway. High salt concentrations lead to the
localization to the membrane of the MAPKK Pbs2, which is
then activated by the MAPKK Ste11 and in turn, activates
the MAPK Hog1. Pbs2 is localized to the membrane though
the interaction of its PxxP motif with the SH3 domain of
Sho1p. SH3 domains are protein interaction domains that
bind to proline-rich ligands with moderate affinity and
selectivity. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 55
Score = 27.4 bits (61), Expect = 0.83
Identities = 18/53 (33%), Positives = 24/53 (45%), Gaps = 4/53 (7%)
Query: 101 ALYNYKPQNDD--ELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
ALY Y DD EL +GE + V + W S +G G P NY++
Sbjct: 4 ALYPYDASPDDPNELSFEKGEILEVSDTSGKWWQARKS--NGETGICPSNYLQ 54
Score = 27.0 bits (60), Expect = 1.3
Identities = 16/54 (29%), Positives = 25/54 (46%), Gaps = 4/54 (7%)
Query: 22 ARAKFNFVAQTH--LELSLVKGELVTLIRRVDNNWFEGRIGT-RRGIFPVTYVE 72
ARA + + A ELS KGE++ + W++ R GI P Y++
Sbjct: 2 ARALYPYDASPDDPNELSFEKGEILE-VSDTSGKWWQARKSNGETGICPSNYLQ 54
>gnl|CDD|213010 cd12077, SH3_Tks5_2, Second Src homology 3 domain of Tyrosine
kinase substrate with five SH3 domains. Tks5, also
called SH3 and PX domain-containing protein 2A
(SH3PXD2A) or Five SH (FISH), is a scaffolding protein
and Src substrate that is localized in podosomes, which
are electron-dense structures found in Src-transformed
fibroblasts, osteoclasts, macrophages, and some invasive
cancer cells. It binds and regulates some members of the
ADAMs family of transmembrane metalloproteases, which
function as sheddases and mediators of cell and matrix
interactions. It is required for podosome formation,
degradation of the extracellular matrix, and cancer cell
invasion. Tks5 contains an N-terminal Phox homology (PX)
domain and five SH3 domains. This model characterizes
the second SH3 domain of Tks5. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 27.7 bits (61), Expect = 0.86
Identities = 16/54 (29%), Positives = 28/54 (51%), Gaps = 2/54 (3%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
Y + Y Q DE+ +G TV V++K +GW+ + G G P +Y+++
Sbjct: 3 YVTVQPYTSQGKDEIGFEKGVTVEVIQKNLEGWWY--IRYLGKEGWAPASYLKK 54
>gnl|CDD|212769 cd11835, SH3_ARHGAP32_33, Src homology 3 domain of Rho
GTPase-activating proteins 32 and 33, and similar
proteins. Members of this family contain N-terminal PX
and Src Homology 3 (SH3) domains, a central Rho GAP
domain, and C-terminal extensions. RhoGAPs (or ARHGAPs)
bind to Rho proteins and enhance the hydrolysis rates
of bound GTP. ARHGAP32 is also called RICS, PX-RICS,
p250GAP, or p200RhoGAP. It is a Rho GTPase-activating
protein for Cdc42 and Rac1, and is implicated in the
regulation of postsynaptic signaling and neurite
outgrowth. PX-RICS, a variant of RICS that contain PX
and SH3 domains, is the main isoform expressed during
neural development. It is involved in neural functions
including axon and dendrite extension, postnatal
remodeling, and fine-tuning of neural circuits during
early brain development. ARHGAP33, also called sorting
nexin 26 or TCGAP (Tc10/CDC42 GTPase-activating
protein), is widely expressed in the brain where it is
involved in regulating the outgrowth of axons and
dendrites and is regulated by the protein tyrosine
kinase Fyn. It is translocated to the plasma membrane
in adipocytes in response to insulin and may be
involved in the regulation of insulin-stimulated
glucose transport. SH3 domains are protein interaction
domains that bind to proline-rich ligands with moderate
affinity and selectivity, preferentially to PxxP
motifs. They play versatile and diverse roles in the
cell including the regulation of enzymes, changing the
subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 54
Score = 27.4 bits (61), Expect = 0.95
Identities = 15/44 (34%), Positives = 25/44 (56%), Gaps = 3/44 (6%)
Query: 27 NFVAQTHLELSLVKGELVTLI---RRVDNNWFEGRIGTRRGIFP 67
+ AQ ELSL G++V++I ++ W+ G+ G + G FP
Sbjct: 7 RYTAQAPDELSLEVGDIVSVIDMPPPEESTWWRGKKGFQVGFFP 50
>gnl|CDD|212950 cd12017, SH3_Tks_3, Third Src homology 3 domain of Tyrosine kinase
substrate (Tks) proteins. Tks proteins are Src
substrates and scaffolding proteins that play important
roles in the formation of podosomes and invadopodia, the
dynamic actin-rich structures that are related to cell
migration and cancer cell invasion. Vertebrates contain
two Tks proteins, Tks4 (Tyr kinase substrate with four
SH3 domains) and Tks5 (Tyr kinase substrate with five
SH3 domains), which display partially overlapping but
non-redundant functions. Both associate with the ADAMs
family of transmembrane metalloproteases, which function
as sheddases and mediators of cell and matrix
interactions. Tks5 interacts with N-WASP and Nck, while
Tks4 is essential for the localization of MT1-MMP
(membrane-type 1 matrix metalloproteinase) to
invadopodia. Tks proteins contain an N-terminal Phox
homology (PX) domain and four or five SH3 domains. This
model characterizes the third SH3 domain of Tks
proteins. SH3 domains are protein interaction domains
that bind to proline-rich ligands with moderate affinity
and selectivity, preferentially to PxxP motifs. They
play versatile and diverse roles in the cell including
the regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 53
Score = 27.4 bits (61), Expect = 1.0
Identities = 12/42 (28%), Positives = 23/42 (54%), Gaps = 2/42 (4%)
Query: 111 DELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVER 152
D + ++G+ V V++K GW+ + G G P +Y+E+
Sbjct: 14 DGISFQKGQKVEVIDKNPSGWWYV--KIDGKEGWAPSSYIEK 53
Score = 27.0 bits (60), Expect = 1.1
Identities = 11/38 (28%), Positives = 22/38 (57%)
Query: 36 LSLVKGELVTLIRRVDNNWFEGRIGTRRGIFPVTYVEQ 73
+S KG+ V +I + + W+ +I + G P +Y+E+
Sbjct: 16 ISFQKGQKVEVIDKNPSGWWYVKIDGKEGWAPSSYIEK 53
>gnl|CDD|212926 cd11993, SH3_Intersectin1_4, Fourth Src homology 3 domain (or
SH3D) of Intersectin-1. Intersectin-1 (ITSN1) is an
adaptor protein that functions in exo- and endocytosis,
actin cytoskeletal reorganization, and signal
transduction. It plays a role in clathrin-coated pit
(CCP) formation. It binds to many proteins through its
multidomain structure and facilitate the assembly of
multimeric complexes. ITSN1 localizes in membranous
organelles, CCPs, the Golgi complex, and may be
involved in the cell membrane trafficking system. It
exists in alternatively spliced short and long
isoforms. The short isoform contains two Eps15 homology
domains (EH1 and EH2), a coiled-coil region and five
SH3 domains (SH3A-E), while the long isoform, in
addition, contains RhoGEF (also called Dbl-homologous
or DH), Pleckstrin homology (PH) and C2 domains. The
fourth SH3 domain (or SH3D) of ITSN1 has been shown to
bind SHIP2, Numb, CdGAP, and N-WASP. SH3 domains are
protein interaction domains that bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs. They play versatile and
diverse roles in the cell including the regulation of
enzymes, changing the subcellular localization of
signaling pathway components, and mediating the
formation of multiprotein complex assemblies.
Length = 65
Score = 27.4 bits (60), Expect = 1.2
Identities = 15/50 (30%), Positives = 27/50 (54%), Gaps = 5/50 (10%)
Query: 28 FVAQTHLELSLVKGELVTLIRRVDNNWFEGRI---GTRR--GIFPVTYVE 72
+ A +L+L G+L+ + ++ W+EG + G +R G FP YV+
Sbjct: 12 YTATGPEQLTLAPGQLILIRKKNPGGWWEGELQARGKKRQIGWFPANYVK 61
>gnl|CDD|212831 cd11898, SH3_SNX9, Src Homology 3 domain of Sorting nexin 9.
Sorting nexin 9 (SNX9), also known as SH3PX1, is a
cytosolic protein that interacts with proteins
associated with clathrin-coated pits such as
Cdc-42-associated tyrosine kinase 2 (ACK2). It binds
class I polyproline sequences found in dynamin 1/2 and
the WASP/N-WASP actin regulators. SNX9 is localized to
plasma membrane endocytic sites and acts primarily in
clathrin-mediated endocytosis. Its array of interacting
partners suggests that SNX9 functions at the interface
between endocytosis and actin cytoskeletal organization.
SNXs are Phox homology (PX) domain containing proteins
that are involved in regulating membrane traffic and
protein sorting in the endosomal system. SNX9 also
contains BAR and SH3 domains. SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 57
Score = 27.1 bits (60), Expect = 1.3
Identities = 15/51 (29%), Positives = 27/51 (52%), Gaps = 1/51 (1%)
Query: 102 LYNYKPQ-NDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
LY++ + ++EL ++EGE + V G ++ + G G P +YVE
Sbjct: 5 LYDFAAEPGNNELTVKEGEIITVTNPNVGGGWIEAKNSQGERGLVPTDYVE 55
>gnl|CDD|212848 cd11915, SH3_Irsp53, Src Homology 3 domain of Insulin Receptor
tyrosine kinase Substrate p53. IRSp53 is also known as
BAIAP2 (Brain-specific Angiogenesis Inhibitor
1-Associated Protein 2). It is a scaffolding protein
that takes part in many signaling pathways including
Cdc42-induced filopodia formation, Rac-mediated
lamellipodia extension, and spine morphogenesis. IRSp53
exists as multiple splicing variants that differ mainly
at the C-termini. One variant (T-form) is expressed
exclusively in human breast cancer cells. The gene
encoding IRSp53 is a putative susceptibility gene for
Gilles de la Tourette syndrome. IRSp53 can also mediate
the recruitment of effector proteins Tir and EspFu,
which regulate host cell actin reorganization, to
bacterial attachment sites. It contains an N-terminal
IMD, a CRIB (Cdc42 and Rac interactive binding motif),
an SH3 domain, and a WASP homology 2 (WH2) actin-binding
motif at the C-terminus. The SH3 domain of IRSp53 has
been shown to bind the proline-rich C-terminus of EspFu.
SH3 domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 59
Score = 26.9 bits (59), Expect = 1.4
Identities = 12/42 (28%), Positives = 23/42 (54%), Gaps = 1/42 (2%)
Query: 109 NDDELELREGETV-FVMEKCDDGWYVGSSQRSGCFGTFPGNY 149
N L +EG+ + ++ + DGW+ G +++ G FP +Y
Sbjct: 14 NSTLLSFKEGDYITLLVPEARDGWHYGECEKTKMRGWFPFSY 55
>gnl|CDD|213019 cd12143, SH3_ARHGAP9, Src Homology 3 domain of Rho
GTPase-activating protein 9 and similar proteins. Rho
GTPase-activating proteins (RhoGAPs or ARHGAPs) bind to
Rho proteins and enhance the hydrolysis rates of bound
GTP. ARHGAP9 functions as a GAP for Rac and Cdc42, but
not for RhoA. It negatively regulates cell migration and
adhesion. It also acts as a docking protein for the MAP
kinases Erk2 and p38alpha, and may facilitate cross-talk
between the Rho GTPase and MAPK pathways to control
actin remodeling. It contains SH3, WW, Pleckstin
homology (PH), and RhoGAP domains. SH3 domains bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs; they play a
role in the regulation of enzymes by intramolecular
interactions, changing the subcellular localization of
signal pathway components and mediate multiprotein
complex assemblies.
Length = 57
Score = 26.8 bits (59), Expect = 1.7
Identities = 10/34 (29%), Positives = 18/34 (52%), Gaps = 2/34 (5%)
Query: 101 ALYNYKPQNDD--ELELREGETVFVMEKCDDGWY 132
ALY Y+ D ++ + EGE ++ K + W+
Sbjct: 4 ALYAYQYTGADGRQVSIAEGERFLLLRKTNSDWW 37
>gnl|CDD|212691 cd11757, SH3_SH3BP4, Src Homology 3 domain of SH3 domain-binding
protein 4. SH3 domain-binding protein 4 (SH3BP4) is
also called transferrin receptor trafficking protein
(TTP). SH3BP4 is an endocytic accessory protein that
interacts with endocytic proteins including clathrin and
dynamin, and regulates the internalization of the
transferrin receptor (TfR). SH3 domains are protein
interaction domains that bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs. They play versatile and diverse roles in
the cell including the regulation of enzymes, changing
the subcellular localization of signaling pathway
components, and mediating the formation of multiprotein
complex assemblies.
Length = 52
Score = 26.5 bits (58), Expect = 1.7
Identities = 12/51 (23%), Positives = 25/51 (49%), Gaps = 2/51 (3%)
Query: 101 ALYNYKPQNDDELELREGETVFVMEKCDDGWYVGSSQRSGCFGTFPGNYVE 151
A+ +Y P N L+ +G+ ++V++ W+ + G P +YV+
Sbjct: 4 AIKDYCPTNFTTLKFSKGDHLYVLDTSGGEWWYAHNTTE--MGYIPSSYVQ 52
>gnl|CDD|165396 PHA03124, PHA03124, dUTPase; Provisional.
Length = 418
Score = 28.8 bits (64), Expect = 2.2
Identities = 17/53 (32%), Positives = 28/53 (52%), Gaps = 5/53 (9%)
Query: 3 SIIPYDKIR-TAPKKLSEGQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNW 54
+I+P R P+KL+ G+ RA F + ++ + L KG LV D++W
Sbjct: 302 TILPGGSTRIILPQKLACGKFRAAF-ILGRSSMNL---KGLLVDPEHVQDDDW 350
>gnl|CDD|150009 pfam09173, eIF2_C, Initiation factor eIF2 gamma, C terminal.
Members of this family, which are found in the
initiation factors eIF2 and EF-Tu, adopt a structure
consisting of a beta barrel with Greek key topology.
They are required for formation of the ternary complex
with GTP and initiator tRNA.
Length = 88
Score = 26.8 bits (60), Expect = 2.4
Identities = 8/15 (53%), Positives = 9/15 (60%)
Query: 40 KGELVTLIRRVDNNW 54
GE V + RRVD W
Sbjct: 66 IGEKVAISRRVDKRW 80
>gnl|CDD|213001 cd12068, SH3_MYO15B, Src Homology 3 domain of Myosin XVb. Myosin
XVb, also called KIAA1783, was named based on its
similarity with myosin XVa. It is a transcribed and
unprocessed pseudogene whose predicted amino acid
sequence contains mutated or deleted amino acid
residues that are normally conserved and important for
myosin function. The related myosin XVa is important
for normal growth of mechanosensory stereocilia of
inner ear hair cells. Myosin XVa contains a unique
N-terminal extension followed by a motor domain, light
chain-binding IQ motifs, and a tail consisting of a
pair of MyTH4-FERM tandems separated by a SH3 domain,
and a PDZ domain. SH3 domains bind to proline-rich
ligands with moderate affinity and selectivity,
preferentially to PxxP motifs; they play a role in the
regulation of enzymes by intramolecular interactions,
changing the subcellular localization of signal pathway
components and mediate multiprotein complex assemblies.
Length = 55
Score = 26.0 bits (57), Expect = 2.7
Identities = 13/39 (33%), Positives = 21/39 (53%), Gaps = 2/39 (5%)
Query: 36 LSLVKGELVTL--IRRVDNNWFEGRIGTRRGIFPVTYVE 72
LS +G+L+ L + ++ W G G R G+FP V+
Sbjct: 16 LSFHRGDLIKLLPMAGLEPGWQFGSTGGRSGLFPADIVQ 54
>gnl|CDD|212997 cd12064, SH3_GRAF, Src Homology 3 domain of GTPase Regulator
Associated with Focal adhesion kinase. GRAF, also
called Rho GTPase activating protein 26 (ARHGAP26),
Oligophrenin-1-like (OPHN1L) or GRAF1, is a GAP with
activity towards RhoA and Cdc42 and is only weakly
active towards Rac1. It influences Rho-mediated
cytoskeletal rearrangements and binds focal adhesion
kinase (FAK), which is a critical component of integrin
signaling. It is essential for the major
clathrin-independent endocytic pathway mediated by
pleiomorphic membranes. GRAF contains an N-terminal BAR
domain, followed by a Pleckstrin homology (PH) domain,
a Rho GAP domain, and a C-terminal SH3 domain. The SH3
domain of GRAF binds PKNbeta, a target of the small
GTPase Rho. SH3 domains bind to proline-rich ligands
with moderate affinity and selectivity, preferentially
to PxxP motifs; they play a role in the regulation of
enzymes by intramolecular interactions, changing the
subcellular localization of signal pathway components
and mediate multiprotein complex assemblies.
Length = 56
Score = 26.2 bits (57), Expect = 2.8
Identities = 15/53 (28%), Positives = 25/53 (47%), Gaps = 1/53 (1%)
Query: 21 QARAKFNFVAQTHLELSLVKGELVTLIR-RVDNNWFEGRIGTRRGIFPVTYVE 72
+A+A + A+ ELS G + + + W EG + + G+ P YVE
Sbjct: 2 KAKALYACKAEHDSELSFTAGTVFDNVHPSQEPGWLEGTLNGKTGLIPENYVE 54
>gnl|CDD|218645 pfam05577, Peptidase_S28, Serine carboxypeptidase S28. These
serine proteases include several eukaryotic enzymes such
as lysosomal Pro-X carboxypeptidase,
dipeptidyl-peptidase II, and thymus-specific serine
peptidase.
Length = 433
Score = 27.7 bits (62), Expect = 4.0
Identities = 7/21 (33%), Positives = 11/21 (52%), Gaps = 1/21 (4%)
Query: 130 GWYVGSSQRSGCFGT-FPGNY 149
GWY + +G FG+ P +
Sbjct: 318 GWYQTTDSGNGPFGSPVPASL 338
>gnl|CDD|213013 cd12080, SH3_MPP1, Src Homology 3 domain of Membrane Protein,
Palmitoylated 1 (or MAGUK p55 subfamily member 1).
MPP1, also called 55 kDa erythrocyte membrane protein
(p55), is a ubiquitously-expressed scaffolding protein
that plays roles in regulating neutrophil polarity,
cell shape, hair cell development, and neural
development and patterning of the retina. It was
originally identified as an erythrocyte protein that
stabilizes the actin cytoskeleton to the plasma
membrane by forming a complex with 4.1R protein and
glycophorin C. MPP1 is one of seven vertebrate homologs
of the Drosophila Stardust protein, which is required
in establishing cell polarity, and it contains the
three domains characteristic of MAGUK
(membrane-associated guanylate kinase) proteins: PDZ,
SH3, and guanylate kinase (GuK). In addition, it also
contains the Hook (Protein 4.1 Binding) motif in
between the SH3 and GuK domains. The GuK domain in
MAGUK proteins is enzymatically inactive; instead, the
domain mediates protein-protein interactions and
associates intramolecularly with the SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 62
Score = 25.7 bits (56), Expect = 4.1
Identities = 8/24 (33%), Positives = 17/24 (70%)
Query: 36 LSLVKGELVTLIRRVDNNWFEGRI 59
L G+++ +I + D+NW++GR+
Sbjct: 23 LKFQTGDIIQIINKDDSNWWQGRV 46
>gnl|CDD|225705 COG3164, COG3164, Predicted membrane protein [Function unknown].
Length = 1271
Score = 27.4 bits (61), Expect = 6.2
Identities = 13/62 (20%), Positives = 22/62 (35%), Gaps = 6/62 (9%)
Query: 76 RATPSGAPVDQTLHIDTHSDPVPYHALYNYKPQNDDELELREGETVFVMEKCDDGWYVGS 135
T SG+ L +PY ++ LE+R+ + + D GW + S
Sbjct: 415 SGTLSGSAEGGLLTASMADVKLPYPTVF------RAPLEIRQAQGTLSWRQDDKGWQLWS 468
Query: 136 SQ 137
Sbjct: 469 DN 470
>gnl|CDD|240623 cd05199, SDH_like, Saccharopine Dehydrogenase like proteins.
Saccharopine Dehydrogenase (SDH) and related proteins,
including bifunctional lysine ketoglutarate
reductase/SDH enzymes and N(5)-(carboxyethyl)ornithine
synthases. SDH catalyzes the final step in the
reversible NAD-dependent oxidative deamination of
saccharopine to alpha-ketoglutarate and lysine, in the
alpha-aminoadipate pathway of L-lysine biosynthesis. SDH
is structurally related to formate dehydrogenase and
similar enzymes, having a 2-domain structure in which a
Rossmann-fold NAD(P)-binding domain is inserted within
the linear sequence of a catalytic domain of related
structure. Bifunctional lysine ketoglutarate
reductase/SDH protein is a pair of enzymes linked on a
single polypeptide chain that catalyze the initial,
consecutive steps of lysine degradation. These proteins
are related to the 2-domain saccharopine dehydrogenases.
Length = 319
Score = 26.8 bits (60), Expect = 6.8
Identities = 12/44 (27%), Positives = 20/44 (45%), Gaps = 5/44 (11%)
Query: 81 GAPVDQTLHIDTHSDPVPYHALYNYKPQNDDELELREGETVFVM 124
+ TL T +DPV Y+Y P + E+ +++ VM
Sbjct: 252 HGSIPSTLRASTIADPV-----YDYDPTTNKEVAFSSPDSITVM 290
>gnl|CDD|212791 cd11857, SH3_DBS, Src homology 3 domain of DBL's Big Sister (DBS),
a guanine nucleotide exchange factor. DBS, also called
MCF2L (MCF2-transforming sequence-like protein) or OST,
is a Rho GTPase guanine nucleotide exchange factor
(RhoGEF), facilitating the exchange of GDP and GTP. It
was originally isolated from a cDNA screen for sequences
that cause malignant growth. It plays roles in
regulating clathrin-mediated endocytosis and cell
migration through its activation of Rac1 and Cdc42.
Depending on cell type, DBS can also activate RhoA and
RhoG. DBS contains a Sec14-like domain, spectrin-like
repeats, a RhoGEF [or Dbl homology (DH)] domain, a
Pleckstrin homology (PH) domain, and an SH3 domain. SH3
domains are protein interaction domains that bind to
proline-rich ligands with moderate affinity and
selectivity, preferentially to PxxP motifs. They play
versatile and diverse roles in the cell including the
regulation of enzymes, changing the subcellular
localization of signaling pathway components, and
mediating the formation of multiprotein complex
assemblies.
Length = 55
Score = 24.9 bits (55), Expect = 6.9
Identities = 12/45 (26%), Positives = 26/45 (57%), Gaps = 3/45 (6%)
Query: 99 YHALYNYKPQNDDELELREGETVFVMEKCDDG-WYVG--SSQRSG 140
Y + +Y+ D+L ++ G+ V ++ + D+G W V S+++ G
Sbjct: 2 YTVVADYEKGGPDDLTVKSGDLVQLIHEGDEGQWLVKNLSTRKEG 46
>gnl|CDD|134340 PRK00650, PRK00650, 4-diphosphocytidyl-2-C-methyl-D-erythritol
kinase; Provisional.
Length = 288
Score = 26.7 bits (59), Expect = 7.1
Identities = 11/43 (25%), Positives = 18/43 (41%), Gaps = 5/43 (11%)
Query: 14 PKKLSEGQARAKFNFVAQTHLELSLVKGELVTLIRRVDNNWFE 56
P+ L + + A Q ++L G L + IRR W+
Sbjct: 241 PEILEKDPSYAA-----QIQRAITLSGGLLTSPIRRDPTAWYS 278
>gnl|CDD|235073 PRK02813, PRK02813, putative aminopeptidase 2; Provisional.
Length = 428
Score = 26.7 bits (60), Expect = 7.6
Identities = 10/25 (40%), Positives = 14/25 (56%)
Query: 133 VGSSQRSGCFGTFPGNYVERASLAL 157
VGS+ + G F + +ER LAL
Sbjct: 265 VGSATKQGADSPFLEDVLERIVLAL 289
>gnl|CDD|236333 PRK08691, PRK08691, DNA polymerase III subunits gamma and tau;
Validated.
Length = 709
Score = 27.0 bits (59), Expect = 8.2
Identities = 10/50 (20%), Positives = 16/50 (32%)
Query: 72 EQQSRATPSGAPVDQTLHIDTHSDPVPYHALYNYKPQNDDELELREGETV 121
E S P D+ + +T + P Y Y ++D E
Sbjct: 487 EVPSENPIQATPNDEAVETETFAHEAPAEPFYGYGFPDNDCPPEDGAEIP 536
Database: CDD.v3.10
Posted date: Mar 20, 2013 7:55 AM
Number of letters in database: 10,937,602
Number of sequences in database: 44,354
Lambda K H
0.318 0.135 0.412
Gapped
Lambda K H
0.267 0.0813 0.140
Matrix: BLOSUM62
Gap Penalties: Existence: 11, Extension: 1
Number of Sequences: 44354
Number of Hits to DB: 9,745,560
Number of extensions: 882648
Number of successful extensions: 1229
Number of sequences better than 10.0: 1
Number of HSP's gapped: 1133
Number of HSP's successfully gapped: 473
Length of query: 191
Length of database: 10,937,602
Length adjustment: 91
Effective length of query: 100
Effective length of database: 6,901,388
Effective search space: 690138800
Effective search space used: 690138800
Neighboring words threshold: 11
Window for multiple hits: 40
X1: 16 ( 7.3 bits)
X2: 38 (14.6 bits)
X3: 64 (24.7 bits)
S1: 41 (21.7 bits)
S2: 56 (25.2 bits)